gently cushions the instep of the foot.gently pushes the foot back to the heel of the shoe to prevent heel slippage.can be used in tie shoes or slip-ons.SELF ADHESIVE , applys to the inside tongue of your shoe in seconds.1/4 inch thickthese are a size large self adhesive felt tongue pad for shoes. 2.25 inches wide x 3.25 inches long. we also stock sizes medium & extra large & DOUBLE EXTRA LARGE. size large is by far our most requested....