This Expandable Gymnastics Bar for Kids is built for lasting performance, constructed from thick, hardened steel tubing with a triangular construction design that ensures exceptional stability and durability, safely supporting up to 140 lbs. for children ages 3-9. Designed for cost-effectiveness, the bar features 5 adjustable heights at 35, 39, 43, 47, and 51 in. allowing it to grow with your child for years of use without needing a replacement. Installation is effortless, requiring only that you attach the bars together to be ready for use, eliminating the hassle of complex assembly. The folding and retractable design makes it portable and easy to carry, enabling gymnastics training anytime and anywhere. This training bar naturally strengthens athleticism and muscle strength while helping children stretch, increase flexibility, and promote bone growth, making it a durable, practical, and user-friendly addition to any home. Material: Iron.