Men's Seaweed & Merino Wool Short Swim Shorts – Anthracite

Why Seaweed & TENCEL™ Swim Shorts

Men's short swim shorts with a vintage cut, built from a 68% Lyocell TENCEL™, 29% seaweed fiber, and 3% elastane outer shell in anthracite grey, with 100% inner layer. Inspired by retro European swimwear silhouettes - shorter inseam, clean lines, no bulk. While the rest of the industry wraps you in recycled plastic, these natural fiber swim trunks deliver real performance without polyester, nylon, or PFAS chemicals against your skin.

The outer shell is a soft, quick-drying blend of TENCEL™ Lyocell and SeaCell™ seaweed fiber with a touch of elastane for stretch. The built-in support pouch is 100% merino wool. No synthetic, no plastic mesh. The drawstring is 100% recycled cotton with metal aglets. Because every component should earn its place.

Why You'll Love It

✔ 68% TENCEL™ Lyocell, 29% Seaweed fiber, 3% Elastane - zero polyester, zero nylon
✔ Inner support pouch: 100% merino wool — no synthetic liner
✔ Drawstring: 100% cotton
✔ Vintage short cut — above mid-thigh inseam
✔ OEKO-TEX® certified — tested free from 350+ harmful substances
✔ Naturally soft and skin-friendly — seaweed minerals against your skin
✔ Quick-drying and breathable
✔ No microplastic shedding in water
✔ Temperature-regulating and moisture-wicking

The Problem with Synthetic Swim Shorts
An ASU study confirmed that synthetic swimwear caused an eightfold spike in microplastic levels in water during recreational hours. Your skin is your largest organ — and conventional swim shorts press polyester, nylon, and PFAS chemicals directly against it. Recycled polyester is still polyester. Recycled nylon is still nylon. We chose a different path entirely.

Composition

Outer shell: 68% Lyocell TENCEL™, 29% Seaweed fiber, 3% Elastane — anthracite grey
Inner support pouch: 100% Merino Wool
Drawstring: 100% Cotton 
No synthetic mesh. No polyester lining. No chemical treatments.

Fit
Vintage short cut · Above mid-thigh inseam · Regular fit · Drawstring waist · Side pockets · Built-in merino support pouch

Care
Machine wash 30°C on delicate cycle. Reshape and lay flat to dry. Do not tumble dry. Rinse in fresh water after swimming in salt or chlorinated water.

Made in Poland 🇵🇱