berg trampoline champion oval 17ft with safety enclosure net deluxe | trampoline for kids, high performance & safety features, jump higher with airflow berg berg is the champion of trampoline safety and fun! the berg in-ground grand champion oval trampoline offers top safety, performance, and quality for long-lasting fun. the oval shape combines the strength of round trampolines with the top performance of rectangular trampolines. the exclusive airflow mat allows 50% more air permeation which enables easier and higher jumps due to less air resistance. the twinspring gold springs are rust proof and placed diagonally around the mat to create a larger "sweet spot" than other trampolines. the strong galvanized rust-proof steel frame includes a 10 year warranty. the deluxe safety net is supported by padded curved steel poles to provide a safer distance between the poles and the netting along with a carbon fiber top ring to keep the net structure in place. the deluxe safety net also features very small holes to prevent any finger injuries and includes a self-closing entrance for added safety. the green pvc padding is extra wide (15") and thick (1.25") for comfort and safety and is resistant to fading.