Best for: Soft and stretchy for everyday comfort. In our lightweight, breathable Air fabric, these boxers are your go-to in hot weather or for exercising. . . The features: Trunk-style fitted boxers with a supportive front pouch with fly. With flatlock stitching and a softly elasticated BAM waistband. . . Our fabric: Light as air and naturally cool, our Air fabric is a nature-based, breathable blend of bamboo viscose and organic cotton with just the right amount of stretch.. .. Oxblood Marl. 160 gsm Single Jersey. Supportive front pouch with fly. Easy care. 68% Bamboo Viscose, 28% Organic Cotton, 4% Elastane