Features for round Trampoline 1) Trampoline standard size:5FT,6FT,7FT,8FT,10FT,12FT,13FT,14FT,15FT,16FT 2) Frame tube and leg tube: Steel tube galvanized both inside and outside 3) Heavy-duty galvanized spring 4) Jumping mat: UV PP 5) Spring Cover Pad: Waterproof and UV resistant 6) Pole tube: Steel tube galvanized both inside and outside 7) Easy to assemble 8) Certificate: TUV/GS certificate and CE certificate available