Introducing the Air King Classic 15ft trampoline. Trampolines are not just for kids, they are for the whole family! Parents, teenagers and children alike can enjoy trampolining. Suitable for large families, small families, young children and old, you really cant go wrong choosing a Air King Classic trampoline as its perfect for everyone. Frame The frame is constructed with extra strong galvanised tubes that are covered by our unbeatable 5 year frame warranty. The HOT galvanisation process ensures that the trampoline frame sections are galvanised inside and out, which is better for garden and outdoor use. (unlike most other more cheap galvanised frames that are only galvanised on the exterior of the frame) Springs Spring quality and quantity should be set up dependant on the most common user weight. Generally more/stronger springs are required for heavier users but too many springs can affect performance for lighter users. The Air King Classic 15ft trampoline comes with 72 Galvanised