12 months and up. Enhance building possibilities for children with this innovative Textured Puzzle Blocks set. This set will strengthen children's gross motor skills, critical thinking skills, and hand-eye coordination as they stack, nest, and create 2D and 3D structures. The subtle textures, bright colors, and durable foam pieces will further enhance the comprehensive learning experience that children will receive when they play with this set. Pieces made from easy-to-clean foam. Largest piece measures 4.5"L x 3"W x 1.5"H. 36 Pieces.