BAUER Pro Compression Base Layer Pants are designed for performance level usage. 82% Polyester & 18% Spandex used in the main construction. Secondary is 92% Polyester & 8% Spandex, and the Mesh construction is 91% Polyester and 9% Spandex. Sanitized technology helps prevent bacteria growth which causes odor. Compression fit. Strategic mesh inserts for additional ventilation. Flat lock seams help reduce chafing. Logo waist band with silicon grip. Locker loop at the inside back waist.