MELISSA & DOUG-See Inside Peg Puzzle. This fun alphabet puzzle features corresponding images underneath the puzzle pieces-- B for basket, N for nest, X for x-ray, and Z for zipper... Kids will have fun learning while they play! Each puzzle piece is shaped like the letter and has a small peg on the surface making it easy for little hands to grasp. The entire set is made of wood and measures 8-3/8x11-5/8x5/8 inch. This package contains one puzzle board with twenty-six pieces. Recommended for ages 3 and up. WARNING-CHOKING HAZARD-Small parts. Not for children under 3 years. Imported.