Curved, hardwood blocks in 3 different widths and diameters for use as a fun, building manipulative or as " tunnels" for use with other small toys. For use both in the classroom or at home. * Smooth, Natural finish * Tunnels are 10-3/4" diameter x 5-3/8" High * Non-Toxic, Safety Tested - CPSIA compliant * For Ages 2+ with Adult Supervision Recommended.Set Includes: * 2 X-Large - 11" L * 2 Large - 5-1/2" L * 2 Medium - 3-3/4" L * 4 Small - 2-1/5" L