Polly Rope is 100% non-toxic polyethylene plastic cordage designed for the manufacture of bird toys. The unique twist of this Polly Rope prevents unsafe lengths of fray. Also, polyethylene fibers do not have a "memory" like other rope; this prevents entrapment and limb strangulation caused by fibers such as nylon or unsafe cotton rope. 1/8" diameter. This item is sold by 500' roll. If you are interested in smaller quantities, please look for Polly Rope by the foot.