A speed rope with full aluminum alloy handles and a knurled, textured grip that stays put during fast rotation. The rope runs on a coated steel cable joined to each handle by a metal rotating connection, which is meant to keep the cable turning cleanly through double-unders and sprint intervals. Because the knurling is deliberately rough, the handles are best kept dry and wiped after each session so chalk and dust do not build up in the grooves. Check the cable length and handle diameter against your height and hand size before ordering.Key details:Materials: ["Aluminum alloy", "Knurled grip", "Coated steel cable"]