Lululemon Always In Motion Long Boxer with Fly 7" 3 Pack Ergonomic pouch is shaped for optimal room and support Fly front Super-Soft, Modal Fabric Four-way stretch Sweat-wicking Quick-drying Naturally breathable Fabric is derived from wood-based materials from well-managed forests Materials and Care Materials Item 3: 91% Modal, 9% Elastane Item 2: 91% Modal, 9% Lycra® Elastane Item 1: 91% Modal, 9% Elastane