Each Vuly Thunder2 trampoline is designed to bring safe, no-spring bouncing to more families, with the Compact Leaf Spring system. 'M'-sized round trampolines fit well into families that have one or two children and a little bit of extra space outside. The Polyethylene enclosure on the Thunder2 trampoline is made for Australian weather - with superior UV-resistance and protection. It's both taut and fine mesh protects little digits and prevents tearing. All doors on our new trampoline have a more flexible opening, with greater give when you're coming in and out, but it snaps completely shut when you bounce.Twice-coated galvanised steel on the frame and heat-treated Leaf Springs mean that all metal components on all Thunder 2 trampolines are protected against corrosion and snapping. A great idea for a kids christmas present! There's also not a single trampoline in the world without coil springs that can match Thunder 2's certified weight capacity of 150 kg. Based on heavy-duty suspension systems, the Leaf Springs on Thunder 2 trampolines don't twist and strain knees like coils or rods can. They provide a perfectly upright rebound every time. Our new Leaf Spring design is also 'one piece', making them stronger, with an even better bounce. Unlimited fun is also included with every Thunder 2 trampoline, with the HexVex Game Mat.