The Nike Hyperstrong 4-Pad Football Shirt is a compression base layer with two integrated shoulder pads and two rib pads built into a single garment — no separate inserts to buy or position. Worn as an undershirt beneath shoulder pads and jerseys, the tight compression fit keeps all four pads locked in place without shifting or bunching during contact. Contoured foam padding flexes with upper-body movement so it doesn't restrict throwing, reaching, or breathing — protection that works with your motion instead of against it. Flat seams throughout reduce skin irritation during extended wear under pads and jerseys. Built for all football positions — linemen and linebackers get rib and shoulder coverage for contact in the trenches, while receivers, defensive backs, and running backs get protection in a low-profile fit that doesn't limit cutting or route running. Also works as a training layer for rugby, lacrosse, and contact drills. Meets NFHS padding requirements for organized play at the high school and college level.