Bamboo Rayon Breathable Trunks 3 Pack

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11 reviews
Size: S
Color: Black Iris/Stretch Limo/Castlerock
  • Fabric: 95% viscose fiber (bamboo rayon) + 5% spandex
  • !! Due to the frequent upgrading of fabrics, the ratio of ingredients is for reference only. !!
  • Soft and breathable, natural and comfortable.
  • 3D space increased with Pouch design extension, will provide better wrapping, solve the problems caused by oppression, displacement, and crotch jamming, enjoy ultra freedom.
  • Innovative sewing technology is adopted to make the internal suture more fluffy, reduce stitching and solve the pressure caused by friction.
  • Free from pressure and tightness by using the high elastic soft waistband.
  • It extends to 3.5 inches, which is not easy to ride up, fits the human body curve more, and prevents thigh friction.
Size: S
Color: Black Iris/Stretch Limo/Castlerock

Product information

We Want You to Experience A New Level of Comfort with Separatec.

If you are unhappy for any reason, we ask that you allow us to make things right. Please email our satisfaction guarantee customer service center at regarding any issues with your purchase.

Exchange/refunds for first order:

  • We will refund or replace your first pack without question within the first 30 days of purchase, shipping charges are not included.
  • For this reason, we recommend only ordering a pack for your first time trying our products to see if Separatec is right for you.
  • Beyond your first trial pack, we can only exchange any unopened items for a refund or replacement.

Exchange/refunds for other orders:

  • If you have tried a pack from your order and have decided to return the remaining unopened items for a refund, we will refund you the amount paid in full minus the cost of shipping once the unopened items have been received and inspected. Shipping rates will be determined by location.
  •  If you want to exchange the unopened items, we will reship you a new product once the unopened items have been received and inspected. Shipping rates will be determined by location.

( Reminder: If you purchased shipping insurance can enjoy a free reship. )


How to activate the Satisfaction Guarantee?

If you wish to activate the Satisfaction Guarantee, we require that you contact us before sending anything back. Please e-mail with the following details:

  • Your order number
  • Email address

This information is important to help us verify that the purchase was made from and will be used solely to verify that the request is eligible under the program.


Please be advised:

  • Satisfaction Guarantee only applies to purchases made through within 30 days.
  • All items must be unworn, unwashed, and in original packaging.
  • All shipping costs, duties/import taxes and any other associate fees such as exchange and transaction fees, on the original purchase, including fees incurred for returns, are not refundable.
  • Special offers are non-refundable, non-exchangeable, and cannot be used with the satisfaction guarantee.


Separatec reserves the right to reject a return and decline to refund, subject to applicable law, under the following circumstances:

  • That the items received were not in their original condition/packaging.
  • That the items received were received without proper or secure transportation packaging.
  • That you returned products that you were not entitled to return.
  • That items were missing from the return.
  • That you did not follow the return instructions.


Orders canceling:

We accept order cancellations before the product is shipped. If the order is canceled you will get a full refund including shipping charges.


If you have any questions don't hesitate to get in touch with us at

Gentle cycle with cold water in machine wash/ Hand wash.

Customer Reviews

Based on 11 reviews
Best undies ever

Since first trying Separatec two years ago, I have made it a point to try all the new brands of men's underwear advertised on social media. I've found that only Separatec really lives up to their name, description and promise of quality. I will never buy a different brand of trunk briefs.

Nathan D.
Love these trunks

Very comfortable, as I always expect. Separatec always keeps everything supported!

William C.
Best ever

I love the fit and material of the bamboo/rayon. Soft, stretchy and cool. I first bought cotton and loved the fit but get a little warm in hot climates. Great for colder weather. They shipped via UPS this time instead of USPS and was much better. Still takes a few days to change carriers when entering US but a good experience.

Ray E.
Very comfortable

They are very comfortable and extremely good at wicking sweat away. I would recommend them to anyone.

Keeps things separated!

Who knew underwear could be noticeably comfortable (compared to normal cotton briefs). So much cooler, sits nice, separates. I'm getting more pairs!

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