... Polyethylene,High Thermodynamic & Quality Stability,innocuity nontoxic,100% safe for kids,Classic 1 Engineering product.Spring: Best spring steel, ... are fantastic family trampolines which are best suited to beginners or small children. Although the Fun range is aimed ... your trampoline will stand the test of time.Usage scopeSpecial for kindergarten, residential park,school amusement park, family and ...