These are the most comfortable pair of briefs you’ll ever own. Bamboo Performance Technology™ makes sure you're comfortable all day long. This fabric has an amazingly soft next-to-skin feel. It is lightweight, breathable, temperature regulating, moisture wicking, 4-way stretch, anti-odor, easy care and has UPF 50+ sun protection. All performance attributes are inherent to the fabric and do not wash out! Fitted 6” inseam, double layer FlowMesh™ panel at front, open fly and brushed elastic waistband. 55% Organic Cotton/40% Viscose from Bamboo/5% Elastane. Heather. M(32-33), L(34-35), XL(36-38), XXL(40-42).