Seven shapes, three cuboids, a quarter cylinder, a wavy block, a cylinder and a trapezoidal slope, give enough variety to build a different course each time. High-density EPE foam provides support without hard edges, and every piece is rounded for comfortable climbing. Zippered PU covers with careful stitching hold up to daily use and wipe clean in seconds. The largest cuboid measures 16" x 16" x 8" and the wavy block 23.6" long. No assembly needed; total weight 7.5 lbs. Suits children over 18 months.