"Keep your most valuable personal items in one place with this Stick-On Cell Phone Wallet from Studio Oh! Each wallet is made of a durable, water-resistant material and features an adhesive backing that easily attaches to a phone case. Two secure sleeves provide room for cash and up to 5 cards. Wallet: 2.56"w x 3.6"h (6.5 cm x 9.1 cm) Package: 3.2"w x 5"h (8.1 cm x 12.7 cm) Wallet attaches securely to the back of cell phone. Thin format adds minimal depth to cell phone, so it slides easily into a pocket."