NO HEEL PAIN : Gel liners protect and support your heels from pain, blisters, callus. Hit-and-Absorb foot technology reduces impact, same time side and back protectors pad cup soften chafing, holds heels in place and prevents rubbing and slide. PERFET FOR SHOE TOO BIG : Cushions are designed to fit the contour of the heel section of the shoe. Strong sticky design keeps them in place. Reduces about 1/4 to 1/2 ish of sizes. These insoles can fill your shoe, makes shoes a bit more tight. Gel material stop your feet from slipping in and out of your shoes. STRONG STICKY DESIGN: Our high heel grips have a sticky backing that keeps them in place. Simply remove the adhesive backing and place the pads on the inside heel of shoe. Press firmly. If the adhesive loses its tackiness, just wash it.