Edushape Floating Blocks, letters & numbers 100 pieces Wet and stick foam blocks with construction board and Floating Letters and Numbers "Wet & Stick" little builder, board and blocks stick together & float on water. Great for in and out of the tub construction play. Set includes: 14 blocks, 20 Floating Numbers, About 66 Floating ABC's and 1 platform. Basic block size: 1 1/2" x 1 1/2" (4 x 4 cm).  Platform Size: 9 3/4" x 9 3/4 "x 1/2" (23 x 23 cm).