Baker Ross Heart Jigsaw Puzzles for Children to Design Color-in and Decorate for Valentine's or Mother's Day (Pack of 8) Don't be puzzled! These card heart-shaped jigsaw puzzles are easy to decorate using our fibre tip pens, Deco pens, pencils or paint (not included). Made from 0.04 inches thick card. Puzzle size: 5.51 x 4.33 inches.