Material: EVA, the back is 3M glue. Universal DIY Traction Non-Slip Grip Mat Pad, Can be used to SUP, Boat Decks, Kayaks, Surfboards, Standup Paddle Boards, Skimboards & M 3mm-Depth diamond groove design provides superior anti-slip traction for your SUP.A-Grade closed cell EVA foam is soft and comfortable to the feet or knee, and also absorber of weight and shock, especiallhy for longer distance paddles. Original marine grade 3M self adhesive backing ensures ultimate long lasting stick. 12 Piece combination makes it very easy to install and customize to your watercraft.It's also easy to simply trim the pads to fit perfectlyon your watercraft. We are a surf company that has been in the surf industry over 15 years in China. We have worked for several big brands for many years. We have own designer team and production team for surf products. We have a very professional and responsible sales team. Our main purpose is to provide high quality and affordable products to our customers. Our mission is find the best way to serve the surf product market.