berg trampoline champion inground 17ft with safety net | oval trampoline, high performance & safety features, longer lifetime warrenty, jump higher with twinspring and airflow berg the berg champion has been developed with great attention and care. this resulted in a qualitative excellent trampoline, which is safe to use. it does not matter which one you choose, you choose quality with a berg champion. the berg champion is cleverly designed for long and safe jumping. the combination of the twinspring gold springs and the airflow jumping technique ensures less air resistance, a larger jump area and more jumping fun! higher jumps mean more fun. we have developed the airflow technique to enable you to make higher jumps. this jumping mat allows 50% more air permeation compared with a standard jumping mat. good airflow ensures less resistance while jumping, which is why you can make higher jumps. the perfect jump area is that optimal part of the jump mat which results in the best jump experience. jumping outside of this area results in a sense of feeling as if you are being pushed towards the inner part of the trampoline. trampolines comprising of twinspring gold springs are mounted in the shape of a “v”. this allows for larger perfect jump area compared to trampolines that are sold with a conventional spring. a sunken trampoline with a safety net has a low threshold, making it easy and safe to step onto. the inground trampoline is less visible in the garden than a high trampoline. the oval shape combines the efficient strength of a round frame with the large jumping surface of a rectangular trampoline. on an oval trampoline you can make some nice jumps over the entire length."