With 10 fantastic lenticular stickers, this is one of the coolest postcards around! Each sticker features the same butterfly flying - wings moving in and out! The postcard is a standard European size (5-3/4 by 4-1/8 inch). The 2 larger stickers measure 2-1/2 inches wide by 1-7/8 inch high. The 4 mid-sized stickers measure 1-3/4 by 7/8 inch. The smallest 4 measure 7/8 inch square. The transformation and movement in these stickers is remarkable. Fascinating as they are on-line, you'll be truly amazed when you see them in person.