Material Upgrade: Second-generation upgrade with thickened 3mm steel and high-strength stainless steel springs. Tested for 3,000 continuous jumps. Jump with confidence 4-Level Adjustable Bar: Heavy-duty handlebar with 4 adjustable levels, ranging from 2'6" to 3'5" (on the mat), suitable for adults Foldable Frame Base: With unique foldable design, BCAN rebounder trampoline can be folded size less to 1/4 after removing handle and legs. Easy to storage your mini trampoline anywhere, bed, sofa, car trunk, closet, etc Safe Jumping System: The unique 40 CLOSED SPRINGS connect easy-to-clean pp mat provides a powerful elastic recovery system to makes jumping efficient and safe Efficicient Service Support: Quick response within 24 hours. BCAN parts warehouses are located throughout the US. Make after-sales service easier and efficient.