Bomba Gear Wood Gymnastic Rings with 15ft Adjustable Straps & Buckles/Conditioning, Crossfit Workouts, Strength Training 30mm gymnastic rings made of Baltic Birch wood - Perfect diameter to fit any hand size, male or female. Hand-sanded in a triple step process for the absolute smoothest ring and best grip. 15 foot adjustable straps gives you up to 7 feet of hanging length. Incredibly strong Baltic Birch capable of handling over 1,000 lbs Guaranteed to outlast you, no matter what you do with them