Plus Patches CGM overlay covers have holding power and medical adhesive strength designed for maximum wear time. The biocompatible Polyurethane non-woven tape backing wicks away moisture from water, sweat, or any wet environment and moves with your body with all around stretch for ultimate comfort over the life of your overlay patch. Have other CGM device models? Plus Patches offers many sizes to fit multiple sensors, including covers for Dexcom G7, Freestyle Libre, Guardian, and Omnipod 5 devices.