FURINNO trampolines bring a jump of fun to your family. We carefully select the highest quality material, pay close attention to every detail in production and deliver the best product to customers. We want our customer to enjoy the most fun without worrying about the safety. The powder coated steel frames create sturdy structure for the trampoline. Springs are specially treated and covered with extra thick spring covers for optimal level of elasticity and safety. Polypropylene jump mat is UV-resistant for durability. For safety and longer lasting product life, please read and follow the assembly Instruction and maintenance schedule carefully.