Apple Iphone Custom Case 5 5s AND SE Snap on - Keep Calm and Love Math w/Pi Symbol & Swirling Number Apple Iphone Custom Case 5 5s AND SE Snap on - Keep Calm and Love Math w/ Pi Symbol & Swirling Number SNAP ON BACK PLATE Measures 4.5" x 2.25", Hard plastic, durable and lightweight. Protects edges and back of phone from bumps and scratches Compatible with Iphone 5 universal Sprint - AT&T - Verizon