Unique anti-collision design with a safety distance of 4"". Reinforced double-layer structure for additional steadiness. 3 U-shaped metal legs with non-slip mat for overall stability. Elastic jumping mat and bungees for a good bouncing experience. 360° all-around enclosure net and no-gap design for secure use. High-density enclosure net with secure two-way zipper for safety. Soft Epe foam and child-friendly details for security. Waterproof protective cover for worry-free cleaning. Beneficial to bone growth, motor skills and physical fitness. Perfect gift for boys and girls who are 3-6 years old. Astm and Cpsia certifications for enhanced reliability.