The Discovery Stackers with extremely resilient and durable pieces enhance open-ended play indoors and outdoors. The curved shapes encourage children to explore relationships in balance and organic geometry. This arched set bridges the gaps between various play patterns and brings a new life to light play. A set includes 5 solid, arched pieces and double-sided inspiration cards. The largest arch measures 20cm L x 7cm W x 10cm H (8" L x 2-3/4" W x 4" H).