Add unlimited fun and creativity to constructive play with these colorful, easy to use blocks. Available in 16, 32 or 48 piece sets. 3-by-3 design makes attaching blocks easy! 6 bright colors molded in ensure blocks won’t chip or peel. 12in square blocks are sized perfectly for children’s hands. Created specifically for a multi-child environment. Perfect for indoor and outdoor use. Square foot sizing can be used to introduce simple measurement lessons. Ages 18 months to 5 years. Blocks measure 12″ x 12″ x 1″. 10 year warranty.