Smartphone card sleeve is a thin stretchable card holder slot which gets easily attached to the back side of the mobile. This elastic smartphone card sleeve is made of silicone and nylon which makes it durable for years. This a unique smartphone car holder which contains two slots for holding cash and cards. The outer sleeve is enclosed and protects the cash and cards from falling out accidentally. This is a smart product and it also protects the outer area of the phone from dirt and other external sources.