Assura Flat Barrier. This extended-wear barrier is a highly cohesive adhesive formulation that remains intact over time and minimal erosion/washing out occurs. This increases wear time and means less residue when removed. Assura contains proprietary natural and synthetic polymer adhesives that ensure wear time is significantly longer than Assura Standard Adhesive. The belt tabs are for use with 4215 and 4220. Stoma Size: 3/8" - 2-1/4" (10-55mm), Color: Blue. 5/box.