Introduction
Separatec
77% Polyamide
23% Spandex
6.5″ inseam
SHEATH 4.0
92% Modal
8% Elastane
3.5″ inseam
SHEATH V
92% Modal
8% Elastane
6.0″ inseam
Company:
Separatec
Sheath:
Pouch Design:
Both brands took a different approach in designing the dual pouch. Both pouches are very different: the SHEATH has a D shaped pouch having the flat side facing up for your sack and hole for your penis to go through to a pouch with a regular vertical fly. The vertical fly is much simpler to use and to put on. I guess it’s because we are used to this type of fly from other underwear. One down side of this design is that if you break a boner or you have a greater length, you may be exposing yourself without knowing it. I was brushing my teeth after showering and noticed that parts of my penis were exposed through the mirror. This may not be a problem because there is not a lot of place you would just be wearing your underwear. It’s most likely your bathroom, your house and the change room at the gym.
(a)
(b)
Dimensions:
- Width of Pouch: (see photo (a))
- ~5 inches (Sheath)
- ~4 inches (Separatec)
- Height of Pouch: (see photo (b))
- ~5.5 inches (Sheath)
- ~6.5 inches (Separatec)
- Sack Pouch starts from waistband:
- ~2.75 inches (when pull straight) (photo e) / ~4.5 inches (lowest point without any pull) (photo d) (Sheath)
- ~5.75 inches (photo c) (Separatec)
(a)
(c)
(d)
(b)
(e)
Hole:
Fly
Fabric
The fabric of the two pieces are very different. Separatec uses Polyamide and Spandex; whereas, Sheath uses Modal and Elastane. I understand that Separatec also has a different collection that uses Modal; however, they use Spandex over Elastane in those collections.
Polyamide – which is a better name than Nylon. Polyamide has a long history and is the first synthetic fiber developed. Polyamide fibers are made of several molecules linked together creating a long chain. The fabric is not very insulating, which makes it a good fabric for underwear, since we do not want heat to build up. When this fabric gets wet, it will remain to be wet for some time, but it does come will a cooler feeling. Polyamide was originally made as an alternative to silk which is soft and flexible which makes it a perfect piece of fabric for your crown jewels to sit in.
Spandex – which is also known by the brand name Lycra which allows stretch in many pieces of clothing. The synthetic fabric can expand to nearly 600 percent of its size and does not restrict the range of motion, and then snaps back in place. Spandex is also breathable, wicks moisture, and dries quickly
Modal – Is a fabric that is extremely hard-wearing and keeps its shape and finish, even after frequent washing. It has a silky texture feeling. One key feature of modal is that it does not trap perspiration and odors, so your underwear won’t smell as made as synthetic fabrics. Also modal fabric is 50% more absorbent than cotton which is also better than cotton.
Elastane – is actually the same fabric like spandex. It’s just a terminology that is used in different regions.
The fabric of the Separatec boxers feels much thinner than the Sheath ones. Based on the fabric information above, you can see that the Separatec will stretch a lot more than the Sheath ones with it’s high percentage of spandex/elastane. The only difference is the main material of Polyamide/Nylon and Modal. Both fabrics are very soft, but the Separatec is a little smoother to touch. Sheath feels more like regular underwear than the Separatec since the Separatec feels very thin. Because of the thin material and the silky properties, the underwear shows your package a lot more. The Separatec does give you the feeling that you are not wearing anything, but the Steath is not that far behind.
Waistband
Both waistbands are considered sports waistband which is sewed onto the underwear. Both are present their logos with some design. You can see that both waistbands have the same width. One difference is how the waistband is sewed together. You can see the Sheath is stitched together in one place; whereas the Separatec overlaps and are stitched in two different places. Not sure why it was done that way.
Size
From the photos above, you can see that the Sheath boxers is a little wider than the Separatec and the Separatec is longer than the Sheath. The Separatec has more spandex than the Sheath, so they are more stretchy overall. I stretch both boxers together in the waistband, and the Separatec stretches about 1-2 cm wider than Sheath.
You can see that SHEATH offer larger sizes and Separatec only offers up to 42 inches.
For my experience if you fall in between the sizes, you may opt for the smaller size with the Separatec if you want them to fit better. For Sheath, staying with the size would be optimal. This is based on my experience – you really need to see how things work for you. The biggest concern wouldn’t be your waist size, but the fitting of your penis and sack would matter more.
Conclusion
Both boxer briefs have a different dual pouch technology. For myself, the Sheath dual pouch seems to work better than the Separatec. I am a grower and have an average size flaccid penis. I find myself falling out of the Separatec a lot more than on the Sheath. One problem I see with both dual pouch technology is when you are a show-er. Anything penis at flaccid over 6 inches may have problems. When I wear the Sheath, there is about 1 inch room before I hit the bottom of the fly. So anybody under 6 inches at flaccid should be able to point down without having to wrap or point into different directions. The Separatec has a lot of fabric for larger flaccid penises. I spoke with someone on Facebook and he said that he was about 6 inches and he felt that the Separatec was uncomfortable. He had to start wrapping his penis a bit because the fabric was stretching if he just pointed down.
The Sheath has a button feeling to support your penis and it feels more of a tighter support which could be the reason why it falls out less than Separatec. The Separatec pouch is much looser and does give you the feeling that you are wearing nothing. Unfortunately, with no feeling, the penis can easily fall back into the hole more often.
The Sack pouch implementation is different too. I actually like the Separatec pouch more, but if you have a larger sack or a swollen sack, it may not be big enough for your sack to sit on. My sack fits very well in the Separatec sack and it’s very supportive. Even when certain movements the lift of the sack feels much smoother and less odd. The Sheath sack really needs to get used to since it relies on the fabric to fit right behind your sack, so that your sack can sit into the pouch. But the pouch is sooo big that my sack doesn’t even fit into the pouch. It just hangs in mid air and what it is supporting is the perineal area right behind my sack. It does cause some odd lift feelings before you get used to it.
Overall, I still have mixed reactions to both brands and both technologies. I would say the SHEATH works better for me, but I do like the fabric of the Separatec. There are pros and cons on both brands and I hope my comparison would help you decide on which one to buy.
Please leave feedback on what else you want to see in the future, or if I have missed anything. As always please like my Facebook page, or Instagram. If you haven’t filled in the survey, please do so too!
Afterthoughts
After wearing the both SHEATH 4.0 and Separatec Dual Pouch systems for the 3+ times, I wanted to provide some afterthoughts. The Separatec does give you much more freedom in the feeling side and does give you the wear nothing feeling once you put them on. However, once your penis falls out of the hole, you will start to readjust or give it up and use it as a single pouch.
The SHEATH does give you the initial lifting feel, but that feeling quickly goes away. However, my sack does fall out of the pouch when I sit around, but my penis continues to stay through the hole.
I also spoke to guys on the Separatec posts on Facebook, and there are complaints that the Separatec sack is not large enough to fit their balls onto. I have no trouble with my sack fitting into the pouch, but someone also said that our sack was designed to be hanging and not wrapped in the Separatec pouch. That could be one reason why our penis will fall out of the hole on the Separatec. I don’t know if that is the reason, and have no scientific proof that the pouch is the reason why your penis will fall out.
I’ve seen very positive feedback on the Separatec and also see true followers for the SHEATH. I guess there is no difference between car manufacturers like Honda vs Toyota or BMW vs Mercedes. They both do the same thing, but have different implementations to get the car moving. Both brands have different designs, but also support your penis and sack with their dual pouch technology. I really love new technology in men’s underwear since we all deserve something better for our little guys down there.
Both are great underwear when it works for you. From all the reading and myself personally testing both systems, I would say that my guy profile fits better with the SHEATH. As noted before, I really love the Separatec materials, but the SHEATH keeps my package supported and there is less fallout from the penis pouch. I believe guys with larger penis lengths up to 6ish inches will love the Separatec over the SHEATH.
The SHEATH are not cheap and they are about 2x the price of a pair of Separatec. I really hope that Separatec will offer their underwear in single packs and provide free first time shipping, so that guys can try them out before committing to buy 3 or 7 pairs. I believe most men like me will put underwear that doesn’t work aside and don’t touch them until it sits there long enough before going into the garbage bag. Men don’t share underwear and don’t give them away to others with them knowing that you have worn them before. Buying a 7 pair and them not working is a waste of resources. I hope one day Separatec will sell their products in trial packs so that guys can try them at a lower price and if they work, they will buy more. If they believe in their products, they should do this and not sell 3 or 7 pairs at a premium price and not get business from them. As for SHEATH, if they offer a discount code to have a premium pair of underwear with free shipping, I think more men will buy more from them once they know they work from them.
I personally will not buy more from Separatec and SHEATH, as I need to buy different types and brands so that I can provide my honest views to you.
Your Views
If you own a pair, provide your review below – just one click! If you have any questions/comments, you can anonymously leave your feedback below.
You can also upload your photo wearing this piece of clothing. Please make sure you do not show male anatomy or else it will be deleted. If you want to show off your pairs, you can reach us and we can put it as part of the 18+ section. Thank you!
So, I am 61 years young 6’2” 220 lbs 39 waist. I am a grower not a shower. I have always worn Hanes Comfort Stretch Tagless Briefs in an XL. They have been ok but smash everything together. I tried the Sheath briefs and the pouch for the boys was very uncomfortable and the place for the rod just smashed it not comfortable very big on the fit.
I saw these Separatec Briefs in an online add, and finally after much debate thought I would give the 7 Pack Cotton Stretch Briefs a try. After reading several reviews I decided to order the XL. They were a little big and did not hold the rod in the hole, kept popping out. I returned them with out any problems and ordered them in a Large. Still just slightly loose, I washed them in warm and dried them, now the fit is amazing, so super soft and a very nice elasticity to them. These I would say are a midrise, however they sit just slightly above the hip bone. My rod stays put even with bending, squatting and sitting.
As far as I can tell the fit is very important, now the hole for the rod sits flush against the base of the rod at my pelvis, and is so very comfortable and soft. Your boys feel like they are being held gently and away from your thighs. Your rod is also in its own pouch just chilling all day. Not a problem at all as my size changes during the day, if you know what I mean. Mind you it is a slightly snug fit; however, it is very comfortable. I do not even have to do any adjusting at all. Feels like I am not even wearing any underwear at all. The waist band is very soft and does not roll. As the day goes by, and as all men know we change size by temp and mood it is not a problem plenty of room in the front pouch. These are also very good to sleep in.
I can’t say enough about this product. Just pull them up and everything automatically goes into its own place. Everything in its own place no sweat, no sticking just so darn comfortable. The fly is so easy to use, unzip pull the flap up and let your rod out and do your business.
These are the best underwear I have ever owned. I am ordering another 7 Pack of the briefs and a 7 Pack of the trunks for colder weather. I am going to throw all of my other underwear away and it will only be Separatec for me from now on. CUSTOMER FOR LIFE!!!!
Randy, it’s great that you enjoy and have found the underwear that works well for you. Separatec is definitely a different pair of underwear to help separate the rod and sack. I’ve been trying many ways keep my rod in and it hasn’t worked. I even downsized to Small and it has improved a little, but still falls back inside.
Separatec doesn’t seem to work for me, but I’m glad it worked for you and I know it has worked for many other guys on this site.
Meanwhile, I’m still trying to find the best underwear for myself – even after reviewing over 130 pairs of different underwear.
I got a couple pairs of Sheath trunks and have been wearing them for a couple days. I like them, but they fit looser than I like. The company was great and is sending a size smaller at no charge. I just ordered a 3 pack of the Separatec. I greatly prefer trunk style to boxer briefs, but I usually like polyamide/spandex better than a cotton or modal. We’ll see how it goes.
Farminboy,
Let me know how the downsize works. Have you tried the mesh sheath? I actually like the mesh over the normal fabric. Separatec doesn’t work well for me since my guy likes to hide and falls out of the pouch. I’ll be reviewing a downsize Separatec soon.
Please do provide your feedback when you get to try to separatec and down sized sheaths.
I have not tried the mesh sheath. I used to have some mesh CKs. For the past 10 years I’ve been wearing CK trunks made with nylon/elastane (steel, one, micro). I love how they hold up and continue to support. I had a brief period where I went to MeUndies, but they did not maintain their support over several washes. I went back to CKs but more recently have been seeing ads for different single pouch brands. My search for the best option led me to the dual pouch and then to Wearviews. I’m a little nervous that I’m going to fall in love with the dual pouch and will discard all of my trusty CKs. Just two days of the Sheath trunks and I noticed a big let down with my usual trunks. I don’t know how you continue to wear different varieties when you find ones you love!
In hunt for the best underwear is not easy. CKs have not been a good brand for me. I feel the dual pouch systems work to some extent and if your assets allow you to work with them. The dual pouch system in fact created Wearviews as I also saw ads about a dual pouch system and a friend asked me how they worked. Then I got the idea of spreading the wealth and letting other guys about my experience with underwear I buy and try. Pouch underwear definitely feel better than underwear that pushes your assets towards your body. SAXX, BN3TH, 2UNDR, Hook, Nth Degree all have pros and cons. None of them are perfect for me.
Enjoy the Separatec primarily for workouts in gym shorts. Rather challenging to access through my fly when using a urinal when worn with pants. One has to dig to get to the end of the sheath to gain access. For me, the penis sheath could be roomier as I am above average in size and find it a little constricting, If offered with a large penis sheath option they would be perfect.
Joe, thanks for the feedback. I’m just at average at most and that is why the Sheath is better off for me than the Separatec. I just keep on falling back into the pouch and can’t take advantage of the dual system.
Thanks Patrick for such a nice feedback. David Archer seems to be a brand that are built by other manufacturers. Sheath is also made in China, but the quality is good. Give it a try and let me know which one you like more.
Thanks so much for this comparison. I have been wearing Separatec, and David Archer underwear (virtually the same) for over a year now. I like them very much. I agree the the fabric on the penis cover is very thin and doesn’t absorb drips well. My only other issue is that they are somewhat “high waisted”. They seem to fit better and be more comfortable if I fold the waistband over. I have been curious about Sheath. I like the fact that it was developed by a veteran, as I am one as well. I’m curious as to where Sheath is manufactured. The underwear I purchased comes from China which may account for the lower cost. Based on your comparison, I’ve decided to try Sheath. I like the idea that the fly is more user friendly. I have on occasion when wearing jeans with a short rise, had trouble getting “the horse out of the barn”!
Thanks for the update, I really like the fact that you are doing follow ups. There are many times when after a few washes or doing a variety of different activities that I find something I liked out of the package doesn’t hold up for long term use.
I bought the three pack of briefs from Sepratec. I have never had underwear as comfortable as what these are. I am rather well endowed, and I had been wearing loose boxers for years due to everything being “scrunched” together in regular briefs or tight boxers. I then seen an advertisement for these Sepratec, and thought I’d give them a try. I was pleasantly surprised by the fit. Although the “penis pouch” could stand to be just a touch bigger, things fit very comfortably. I would highly recommend them to all my friends.
Larry, thanks for your feedback on your purchase. Hope you enjoy them. Did you read our review before buying? Or you bought them and read our review afterwards?
I read the review afterwards
Tom, thanks for your feedback. If you look at the exterior when wearing the Separatec, you will see that it looks like a pouch for your sack. You are right that it’s an area for your sack to rest, but it does have the contour sack for your sack to fit onto. The hole is for your penis to go through, but the exterior pouch/fly is for your penis to sit onto if you enough length.
I’m guessing that the pouch in the Separatec for your testicles is not a pouch at all, but the normal resting place for my testicles, and that the hole is for my penis to go into. The mention of 2 pouches confused me. They are extremely comfortable. I’m probably going to order more as I only originally ordered the 3 pack.