Leashes made of nylon withstand hard pulling, as well as bad weather conditions. These leashes are simple in care, because don't need any special water repellents and creams. Nylon is strong, reliable and safe material which will not provoke allergy or skin diseases. Besides, it is flexible and will not tear or crack. What is more, nylon is resistant to rot, mold, dew, insects, animals and many chemicals. It doesn’t stretch and will serve you for a long period of time.