This is your gymnastic or tumbling trampoline. The rectangular model offers the greatest control, and overall rebound action. For skills, this is the official shape as recognised for gymnastic training. The frame is a 13 gauge, 7.6cm diameter galvanised steel, with double support rails standing 90cm high, competition 23cm tapered German cross-over springs, with a welded-loop construction. The jumping mat has a sun webbing sewn over the stitching to protect from deteriorating effects of the sun. This is the same model that we sent to the U.S. Olympic Ski Team for training in Park City, Utah. Safety pads are included with this model. You will not find a better built and safer rectangular trampoline. This trampoline is one of the best trampolines you can buy. You will get years of enjoyment from this trampoline. Frame: 10 Years. Springs: 5 years. Mat: 3 years. Pad: 1 year. By signing for the delivery you are agreeing that you are receiving the correct number of packages and that they are in good condition.