The jumpking 12ft premium trampoline is a durable trampoline with superior bounce quality made with heavy duty galvanised springs that are covered with uv resistant teclon pads the trampoline is safe and set to last the frame is secured using a new and improved socket system which is both safe and tidy negating the appearance of u bolts and brackets with this trampoline fun and safety is promised to all as it is also fitted with a sturdy safety net