... trampoline,bed trampoline,fitness trampoline,bungee trampoline(such as 1 in 1 bungee trampoline,2 in 1 bungee trampoline,classic 4 in 1 bungee trampoline,mobile bungee trampoline ... absorb water, mildew or lose.ShapeTubesDouble galvanized for inside and outsideCertificationTUV-GS, EN-71, EN913, ASTM, AS4989 certificate Our round trampoline is ...