Over and under, in and out—which way will you go? Bright shapes and colors make fun pathways and tunnels for beginning climbers to choose their own adventure. Tunnels have higher density foam to keep kids safe while playing. Soft, sturdy, polyurethane foam shapes are covered in reinforced, phthalate-free vinyl to create a comfy and stimulating learning environment. Encourages climbing, crawling, social interaction and develops gross motor skills.