The flexi retractable leashes is the best on the market it never slacken as they are always subject to sufficient tension with the help of the integrated braking system the animal is always under control in addition a lock button can fix the length of leash when walking to heel proven technology high stability and a good price performance ratio make this product line in 2008 the 3rd generation presented here the durability of the classic lines of a patented high tech suspension syst