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These are superior for developing fine-motor control. Lace the 7 shapes, strengthening the pincer grip that's important for good handwriting. Trace the heavy-duty chipboard shapes that lie flat for smooth tracing. Seahorse is 7" long and come with 7 tipped 36" long laces. Lauri Foam Puzzles are the best and Lauri replaces any lost pieces for the lifetime of the puzzle. Ages 3 and up.