Dyna-Stopper Multi-Purpose Wound & Trauma Dressing from Dynarex is designed to aid in the control of heavy bleeding. Multi-purpose sterile, blood absorbent trauma compress with non-stick wound pad and removable pressure block. Compare to BloodStopper trauma bandage. Each single wound care dressing pack includes one compress dressing pad size 3-1/2″ x 5-1/2″ that unfolds to 9″ x 5-1/2″; and two gauze roll pressure blocks, 4″ x 4.1 yards each. Essential for your first aid kit.