Block play has a new look with the Wood Designs Wooden Arch and Tunnel Block Set! This unique wooden 10-piece set features tow different curved shapes, eight classic arches and two sturdy tunnels. This new twist on a classic educational toy helps develop spatial awareness and motor skills as well as spark creative and imaginative play. Encourage young architects to create bridges and tunnels or build large futuristic cities and airport hangers! The blocks are constructed out of birchwood, creating a sturdy and safe block for every age range, This product is Greenguard® Gold Certified for non-toxic emissions and air quality. CPSIA and CARB Phase 2 Compliant. Arch Dimensions: 5½"H x 11"W x 3"D. Tunnel Dimensions: 5½"H x 11"W x 11"D.