YOUR TAX-DEDUCTIBLE CONTRIBUTION PURCHASES THIS ITEM FOR OCS - THANK YOU! Little ones can think big with this giant building set! Children simply use the connector pipes to link the large foam blocks and spheres...creating free-form designs, large-scale structures and more! Plus, the soft foam design is perfect for safe and quiet play. Set includes 12 spheres, 12 blocks and 24 plastic pipes in 2 sizes; longest pipes measure 12" each