Lightweight and seamless, the Running Briefs are designed with a classic fit and everyday comfort in mind. Sweat-wicking, breathable fabric will keep you cool and dry - even during the toughest runs. Experience serious support and total control for your package. 100% chafe-free, guaranteed. ️ Now made with 92% recycled fabric (GRS certified) Runderwear Men's Running Briefs - Black Black M male Men's Underwear adult.