Introducing the Green Big Air Extreme 14ft trampoline with enclosure. 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 can’t go wrong choosing a Big Air Extreme trampoline as it’s 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 other cheaper 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 Big Air Extreme 14ft trampoline comes with 88 G