●VENTED CUP PANEL made with breathable mesh for maximum flow ●BIO-FLEXª CUP unique, vented Bio-Shape body with integrated gel perimeter pad for unrestricted movement and improved comfort ●Constructed with supportive four way stretch, anti-microbial fabric that wicks moisture away from the skin. Flatlock seams, vented mesh cup pocket and comfort waistband. ●Cup pocket allows easy cup removal for washing ●Measure around waist - Boys Large is for 26-28 inches, Boys X-Large 28-30; Adult Small 30-32; Adult Medium 32-34; Adult Large 34-36; Adult XL 36-39; Adult XXL 39-43.