LIFTEX - THE MOST TRUSTED NAME IN SLINGS SINCE 1955. Tested. Proven. Trusted USA Quality. STRONG AND LIGHT - Constructed from a continuous loop of 100% polyester fiber. Each RoundUp Roundsling is covered with a double polyester woven jacket to protect the load-bearing fibers from damage. Because the load-bearing fibers never come in contact with the load, they are protected from cuts, abrasions and ultraviolet degradation. The Endless "ENR" design allows for rotation of bearing points, avoiding one constant bearing point and thereby increasing useful life. Tough, Resilient TAG that WONT easily tear off, scratch off, and never handwritten.