For soccer, rugby, field hockey or any contact sport. Top Shot Chest Protector (when worn with the TS1085 Sports Bra sold separately) provides comfortable protection from contact with other players or sports equipment. Fits snuggly against the body, but does not restrict movement. Lightweight and comfortable, yet strong and durable construction. Patent # 6,375,537. Endorsed by AYSO and Women’s Football Association. Allowed by FIFA. Lightweight polyethylene is strong and durable, with a cushioned liner for comfort. Breathing holes allow the air to circulate. Attaches to the Top Shot Sports Bra for protection from bruises and other injuries. Machine washable in cold water, air dry. For sizing, if your cup size is: Smallest A order X Small, Regular A order Small, Full A to B order Medium, Full B to Full C order Medium or Large, D order Large, Larger than D order Large or XL.