This colorful, wooden, knob puzzle from HABA helps children learn the alphabet. Large, easy to grasp knobs on each piece help with the development of fine motor skills. Playing with this puzzle also encourages spatial perception, shape, and color recognition. Several letters include a picture clue such as a Dragon for the letter "D" and an Igloo for the letter "I". Puzzle is made of linden plywood and measures 20" L x 6.5" W. Packaged in shrink wrap. Best for ages 2 years and older.