Dynamic climbing rope stretches to absorb the energy of a fall, protecting the climber and the anchors.
Single ropes are used alone; half and twin ropes are used in pairs. Dry-treated ropes resist water and ice. Gym ropes are built for indoor top-rope use, and canyoneering ropes are low-stretch ropes made for rappelling in wet canyons.
Compare diameter, weight per meter, rated falls and impact force. Dynamic ropes are tested to the UIAA 101 and EN 892 standards.