InGround trampoline set 10 with safety net The combi (10) has a diameter of 305 cm and is extra safe due to the safety net. An InGround trampoline is buried in the ground and rises 20 cm above the ground. If you want a trampoline completely level with the ground level, then we have the FlatLevel trampoline. Apart from the fact that an InGround trampoline is nicely integrated with your garden, the trampoline is also safer due to the low entry and exit. Avyna Pro-Line trampolines have a sturdy edge that completely covers the springs and the frame, even when jumping. We give a lifetime warranty on the frame and you get a 10-year warranty on the double galvanized springs. Our trampolines meet all the latest safety requirements and can therefore also be placed in public places. Have someone else dig in? We have developed the trampoline in such a way that digging in is not very difficult, but do you want to outsource it? Take a quick look here if you could help. They have experience with digging in an Avyna trampoline.