Sports Hoop for Exercise: Wavy Hoop 1B - 1.0lb (Dia.36) Small, Exercise Hula Hoop Recommended for children and targeting arms and legs, weighing under 60lb.. Great way to have fun and adopt a healthy lifestyle. Maximizes weight loss and improves workout results. Weighs 1.0 pounds (0.5 kg) and measures 36 inches (91cm) across. Lightweight durable plastic in 4 vibrant neon colors. Patented wavy design stimulates core muscles, improves weight loss. Special design for teenager, patented wavy ridges. Made with durable materials. Easy to assemble and detach. Easy to assemble and disassemble. 9 detachable sections for easy storage and transport. Made of a durable plastic core for comfortable and fun exercise. GS certified.