Come and see our amazing products. The card holder is made of strong quality, anti-slip silicone material. It is strong and durable enough to keep its shape and cards will not fall out. Easy use, peel off the cover of the back of the card holder, and stick on the back of the phone, then done. With the strong sticker, it can adhesive on any smooth face and hold things firmly. 100% guarantee for quality. The price includes the shipping cost to ca, QTY for 15000pcs and over by ocean. Pls confirm with us about the packing info, stock color and exact production time before placing your order.