B.Duck Card Holder with Strap, Yellow 2 pockets on each side, and one comes with window can show your ID without taking it out of the holder; Strap comes with clip for easy put on and off Materials: Non-Phthalate PVC, Nylon, ABS & Metal Dimensions: 3 1/8"x1/8"x4 1/4" Packing: PP box 30 days special warranty from B.Duck