Petzl Knee Ascender w/Knee Ascent Loop One Size. It contains an upper strap a CROLL L rope clamp a lower strap with foot loop and an XS size TOOLBAG tool pouch. The system is entirely adjustable and adapts to all shapes and sizes. Specifications for Petzl Knee Ascender w/Knee Ascent Loop: Manufacturer: Petzl Type: EN 1891 type A low stretch kernmantel ropes Fabric/Material: Aluminum steel nylon polyester Weight: 280 g Rope Diameter Range: 8 - 13 mm Features of Petzl Knee Ascender w/Knee Ascent Loop Facilitates ascents on a single rope:- upper strap is connected to the mechanical Prusik to allow the ZIGZAG or ZIGZAG PLUS and CHICANE unit to be raised - CROLL L rope clamp is integrated for a comfortable ascent in conjunction with a PANTIN foot-mounted rope clamp (not included)- lower Dyneema strap with foot loop for optimal foot positioning Easy to install and remove:- easy to put in place thanks to connectors and adjustment buckles- comes with XS size TOOLBAG tool pouch making for a system that is always ready to use- CROLL L rope clamp is easy to install thanks to the integrated thumb catch Multiple settings adjust to different shapes and sizes Optimal durability thanks to components available as spare parts Package Contents: Petzl Knee Ascender w/Knee Ascent Loop Petzl D022DA00: Knee Ascender w/Knee Ascent Loop One Size