4-inch-tall Safety Mats are perfect for under Climbing Walls or Monkey Bars! Mix and match mat sizes to have as much coverage as needed. Fall attenuation is a critical element for your active play features. DID YOU KNOW: As we learn to move our body, taking safe risks is crucial to development: physically AND mentally. Studies show kiddos who learn to take risks with movement actually learn to read faster? SO COOL, right?