Men's Sustainable Underwear

Comfort you can feel good about, inside and out. Our men's sustainable underwear pairs two standout fabric stories—bamboo rayon and modal derived from beech trees—into a collection built for the way you actually live. Slip into silky-smooth, ultralight fabric with breathable stretch that moves with every step. And yes, the Cocksox signature support you rely on stays exactly where it belongs.

Why Choose This Collection?

Cocksox has engineered men's underwear since 2006. We know fit. We know support. And we know eco-conscious fabric should never cost you a single thing in performance.

Every pair in this range is cut for real anatomy and finished with one of our signature pouch constructions:

• Original Pouch — enhanced lift for confident, all-day comfort
• Snug Pouch — a closer fit to our original pouch—more discreet with a subtle lift.
• Contour Pouch — a closer fit built for workouts and movement

Choose from 7 distinct styles, so you land on your exact preferred cut every time.

Bamboo vs. Modal Underwear

Two fabrics. Two personalities. One easy choice once you know the difference.

Bamboo leans fresh. It's naturally antibacterial and hypoallergenic, with all-day moisture control that keeps you dry and comfortable from morning meetings to evening plans.

Modal leans light. Ultralight, fast-drying, and lower-bulk, it sits smooth under any outerwear.

Both draw on premium fabric craftsmanship and arrive in signature colorways worth showing off.

Fabric Details & Sizing Guide

Everything you need to know at a glance:

• Bamboo: 92% Bamboo Rayon, 8% Spandex — ultralight, antibacterial, hypoallergenic
• Modal: 96% Modal, 4% Lycra — cellulose-based from beech trees, dries faster than cotton, exceptionally durable for a lightweight yarn.
• Sizing note: Choose the size closest to your measurements. Sitting between sizes? Size up for easier everyday comfort.

Care Guide

Give your underwear the proper care to keep it performing at its best.

Washing: Turn each pair inside out or drop them in a wash bag. Run a gentle cycle, or hand wash in cold-to-warm water with a mild, eco-friendly detergent.

Drying: Line dry in the shade to protect the fabric and keep the fit true.

Frequently Asked Questions

What makes this sustainable underwear collection more eco-conscious?

We build this range from bamboo rayon and modal, a cellulose fibre derived from beech trees. Both offer stronger eco-friendly credentials than standard, higher-impact basic underwear fabrics, so you upgrade your comfort and your footprint at once.

What's the difference between bamboo and modal underwear?

Bamboo leans fresher—antibacterial, hypoallergenic, with silky moisture control that lasts all day. Modal leans lighter—ultralight, super soft, and faster drying than cotton. Pick bamboo for freshness, modal for a barely-there feel.

Is sustainable underwear still supportive?

Absolutely. The support comes from our anatomy-led cut and signature pouch design. The eco-fabrics add breathability and stretch through Spandex and Lycra, enhancing the structural support you already expect from Cocksox.

How should I choose my size in modal underwear if I'm between sizes?

If you sit between sizes, size up. You'll get an easier, more comfortable fit for everyday wear. Modal has great two way stretch.

 What styles and cuts are available?

The range spans briefs, trunks, sports briefs, thongs, slingshots, bikini briefs, and boxers—so you find your perfect match whatever your preference.

 Ready for underwear that feels as good as it does responsible? Shop the men's sustainable underwear collection now and find your fabric, your pouch, and your fit.

 Purchasing note: Items marked Final Sale or Clearance stay yours—they're excluded from returns.