[Durable Climbing Holds for Tree]-- The rock climbing holds are made of high-quality ultra-durable poly resin plastics, weather-resistant, won't crack or fade, textured foot and hand grips without sharp edge make it easier for kids to grip and climb up. [Fun Exercise]-- This set comes in 2 bright colors rocks for a unique ninja climbing tree, to make playtime more fun for the kids. While playing, it can develop a child's agility, endurance, strength, balance, flexibility, coordination, and confidence. [Easy to Install & Detachable]-- The tree climbing rocks set includes 2Pcs colorful climbing rocks and 1pcs 6.88ft ratchet tie-down straps that make installation and detachable very convenient. The package includes installation instruction. There is no need for other accessories or tools, and the grips can be snug to the tree safely. [Safe to Use]-- High-quality ratchets and straps maximum bearing weight can reach up to 200KG. So, it is safe enough for kids to use them indoor or outdoor. Please note that children under 6 years old should be allowed to use this set of tree climbers under parent's supervision. [Outdoor Ninja Tree Climbing]-- Set these holds on a tree and kids can climb up it just like a rock climbing wall, it's really great addition to your backyard treehouse or ninja training equipment, which makes your yard more adventurous. size:Rock size 11.4x7.8CM Material:Polypropylene + webbing colour:Red + Blue Package Contents: 1 x ratchet strap 1 x Red rock climbing 1 x Blue rock climbing