The 3-strand thick training rope is made of durable polyester blend; high tensile strength prevents breaking, fraying, or coming lose Heat-shrink ends which make the Workout ropes more convenient to hold and will offer a better grip when performing the exercise Portability and compact storage: Easily roll up for storage when not in use. The flexible design also makes for convenient portability The Battle Ropes are a great alternative to traditional weights and are great to help you create more endurance, strength 7 styles available for different training purposes: 30ft X 1.5inch, 30ft X 2inch, 40ft X 1.5inch, 40ft X 2inch, 50ft X 1.5inch, 50ft X 2inch