This silicone card sleeve adheres to the back of your phone with strong adhesive. It's perfect for carrying identification, room keys, cash or credit cards. With an overall size of 2 1/4" x 3 3/8", this sleeve is made from silicone material. Choose from a variety of bright colors and add a silkscreen imprint of your company name or logo. Great for trade shows and conventions, make this one of a kind card sleeve your next promotional giveaway!