The KUHL BOXER BRIEF with ADVENTURE MESH fabric is designed to keep you cool and comfortable. The custom, microfiber waistband eliminates stitching against the skin, while the ionic treatment keeps you fresh all day long. Sizing: S(28-30), M(31-33), L(34-35), XL(36-38), XXL(39-41). Fabric: Adventure Mesh 92% Nylon 8% Spandex | 135GSM. Machine wash cold, delicate cycle, no bleach, lay flat to dry. Luxurious custom waistband eliminates stitching against your skin. Microfiber provides superior softness and comfort. Honeycomb grip keeps the hem from riding up. Adventure Mesh is extremely breathable to keep you KUHL. Treated with ionic to stay fresh