This beautiful photo block back loads to fit any 2.1*3.4 inch photograph or print. Grey plastic back clips on and off so you can alternate your picture as often as you like. The 2.3cm deep acrylic block contains the silver glitter solution that comes to life each time you pick your photo. Fantastic gift idea for birthdays, Christmas and any other special occasion. The Glitterblox is free-standing and works for both landscape and portrait images.