... ,European standard 4.Environmental friendly material Product Name: TrampolineFeatures:1) Trampoline size:6,8,10,12,13,14,15,16ft 2 ... both inside and outside 3) Heavy-duty galvanized spring 4) Jumping mat: PP black mat made in the USA5) Frame pad ... ) Certificate: TUV/GS certificate and CE certificate available Popular outdoor trampoline(6-16ft)