ExOfficio Men's Give-n-Go Boxer Brief 94% Nylon / 6% Lycra Spandex Imported Machine Wash Tumble Dry Material: Give-N-Go Stretch (94% nylon, 6% Lycra spandex) Cut: boxer brief Anti-Odor: yes, Silvadur treatment Recommended Use: casual, travel, hiking & camping Manufacturer Warranty: lifetime