The Jack Adams Striker Boxer Brief, athletic designed and engineered for high output activity. Game-changing comfort, breathable design, and made of the finest fabrics make this style your everyday go-to underwear. Made from 95% Cotton and 5% Elastane. From Jack Adams. Black/White/Yellow, Small. Chest: 35"-37". Neck: 14"-14.5". Waist: 27"-29".