Take the ground out of playground. Now you can reach new heights with this Tree Climbers kit. The set includes 6 bases with ratchet straps and 4 climbing holds (the bottom 2 bases are foot holds).. Tree Climbers are easy to install without harming a tree. Since they are easy to install and adjust, you can set them up for smaller children or for adults. Space them closer together to start and space them out further as they grow. Also great for tree limbs (minimum diameter of 10') to practice your bouldering skills. We used standard climbing hold bolts so you can also switch out for your own holds for extra training. For ages 5 and up; maximum weight 250 lbs. Adult supervision required.KIDS LOVE TO CLIMB TREES - Use our innovative Ninja Tree Climbers to help get kids climbing trees and up to the first branch so they can hang out.