Lightweight and sturdy, these innovative connecting blocks encourage creative problem-solving along multiple mathematical planes. Made from felt out of recycled water bottles, our washable interlocking blocks foster creative problem-solving and collaborative play. Truly an open-ended learning toy; this 92-piece set is sized for in-depth and extravagant builds. Easily shareable, our Architectural Set easily supports the wildest imaginations. Contains 92 assorted interlocking felt blocks: 6 large blocks 6 large half-blocks 2 large arches 12 medium blocks 8 medium half blocks 2 domed blocks 44 small blocks 12 round joiners Deceptively simple; our straightforward toys foster creativity and invention. Designed by a Speech Language Pathologist, Lowercase Toys are made for play. Recommended for ages 3+