New Balance Men's Performance Underwear 9 Inch Inseam Boxer Brief 87% Polyester/13% Elasthane Imported Compression 4 Way stretch design conforms to body Lightning Dry Moisture control technology ensures fast drying performance Compression Performance Sport Brief 9" Inseam, Open Fly With Ventilated Mesh Pouch Breathability technology moves moisture away from the body for ultimate comfort The fabric has anti-odor and anti-microbial, Flatlock stitching prevents skin chafing and irritation