Avyna trampoline set 14 The Avyna Pro-Line trampoline set 14 has a diameter of 430 cm, making it the largest round built-up trampoline we have. All our trampolines meet all safety requirements and have been tested as the best. If you choose Avyna, you go for the highest quality and safety. The trampoline has double galvanized springs and is equipped with a sturdy and extra thick safety net. For a built-up trampoline incl. net you can click here. Look here for the loose nets. Unlike other trampoline brands, we give a lifetime warranty on the frame. Prefer to dig in? Look here for a round InGround, or would you prefer a round FlatLevel?