Block Mates are the all-new block play sensation that will revolutionize and revitalize the way that kids play with unit blocks. Slide the Block Mates onto a traditional-sized unit block to create fun play friends! Pieces slide on easily and fit snugly thanks to the patented "Slip-Grip" system! Match the colors to assemble familiar animals, or mix-and-match the pieces to create your very own! Block Mates create a whole new world of block play creativity and ignite the imagination while enhancing fine motor and color matching skills. Ages 3+.