Set includes: (2) Plastic Gymnastic Rings and (2) 16 foot high-strength nylon webbing straps with quick-lock buckles, Medium [20 - 35 lbs. (9 - 16 kg) Resistance], Heavy [30 - 50 lbs. (14 - 23 kg) Resistance] * Ring Material: ABS - Maximum Load: 450lbs (200kg), Pipe Diameter of the ring is 1.18" with a 9.25" outer diameter * Great for pull ups, muscle ups, dips, push-ups, iron crosses and other CrossFit/Gymnastic exercises * Our Crossfit bands are manufactured as a durable continuous 15-layer thick strip of rubber. Most durable band ever made * 60-day Warranty with 100% Satisfaction Guarantee