Melissa & Doug Jumbo Knob Puzzle Set Jumbo Knob Puzzle Set (Set of 6) Extra large knobs make it easy for small hands to remove each brightly colored piece Matching full color pictures are underneath These super sized, solid wood puzzles with extra chunky 1/2" thick pieces are the perfect first puzzles Set of 6 puzzles with themes that include: construction vehicles, shapes, safari, pets, farm, and sea life