Vulken Wooden Gymnastic Rings with Adjustable Numbered Straps. 1.25'' Olympic Rings for Core Workout, Crossfit, Bodyweight Training. Home Gym Rings with 8.5ft Exercise Straps and Workout Handles.[Quick Length Adjusting and Leveling System] Adjusting length is easy and fast thanks to the printed digitals loops on the double layers straps, which ensure even length with every use. [Easier and Safer Installation] While regular gym rings require complicated and precise steps for buckle installation to ensure the safe use, VULKEN gym rings allow for fast and secure set up by simply clipping the carabiners to the numbered loops on both straps.