Trampoline specs: spring: 3.2 X 23 x 28n x 137 mm x 72 pieces. Trampoline diameter: 14 ft trampoline height from ground to jumping mat level : 2.95 Ft safety net height from jumping mat to top : 5.91 Ft jumping mat material: reinforced polypropylene construction material: engineered galvanized metal total assembled trampoline size l*w*h : 14ft*14ft*8.86Ft trampoline safety enclosure: pe mesh netting 5.75Ft jumping mat material: polypropylene pp waterproof surface uv-resistant and fade-resistant steel tube frame: heavy-duty steel 1.3Mm thickness spring cover pad: pe 1.2Inch thickness u-shaped legs: galvanized steel 1.4 Mm thickness ladder: 2 steps outdoor basketball 14ft trampoline solid steel structure: fully galvanized steel frame for better resistance to rust and corrosion 4 u-shaped legs 1.4Mm thickened galvanized steel tube with 8 balanced contact points for better stability and safety. All trampolines are thoroughly tested for safety and durability. The arc shaped tubes are connected by a patented 4mm thickened tee pipeline which can protect the trampoline from bending during use. The basketball hoop is made of rust-proof metal not plastic. Astm f381 & f2225 tested: our 14 ft trampoline has got tested in the lab. Safety net padding cover jumping mat and tubes are labelled with sufficient warnings to avoid injury.