... size 2) trampoline: circular shape 3) trampoline:with strong tube and spring Diameter: 8ft.,10ft.,12ft.,13ft.,14ft.,15ftSprings: ... -duty,fade-resistant polypropylene fabric,which is UV-Resistance and with careful and firm sewing(Import from USA)(5).The galvanized ... bounce on the round trampolines.(6).Normal safety pad,filled with Impact-Resistance EPE foam,thickness 21mm.And the pad cover ...