SGF Speed Ropes are made to order so please allow up to 10 days for delivery. British made handcrafted speed ropes perfect for mastering double unders - the nemesis of many an athlete. Full Carbon 3k Weave Handles Each Handle weighting only 10g each, possibly the lightest ever. Stainless Steel High Speed Bearings Choice of cable size/weight Identification Tag 100% Cotton Storage Bag the ropes are made to order so unfortunately we cannot accept returns on the ropes