Made of durable material Features: Made with durable material. Hardness that is easy to handle. The pattern on the bottom makes it slip-resistant. [How to use] (1) Remove dirt from the sole and dry well. (2) Mark and cut this product according to the size of the sole (about it will protrude a little from the sole). (3) File the product and the sole well, and apply the adhesive evenly on both surfaces. (4) Dry thoroughly until the glue is not sticky. (About 15 minutes to 20 minutes) (5) Check the position and use a hammer to hammer and crimp it. (If there is no base metal, hold the shoes firmly in one hand and hammer them with a hammer to crimp them off) (6) After fully adhering, use a cutter or scissors to cut out the protruding part of the shoe. (7) Sharpen the cut with a fine file to finish it. If the file is not firmly attached or the adhesive does not dry very well, it may cause the adhesion to malfunction. When tightening, pat the area around the shoe with special care to prevent air from entering the shoe. If there is a slight bad adhesion, it is reinforced with instant adhesive.