Lifeline's cables are all made using Progressive Layering Technology™, so they feel better and last longer than common extruded fitness bands. The reviews say it all and it's true - Lifeline really makes great fitness bands (and handles)! Use different bands for different exercises and ranges of motion - or move up to the next resistance level for added challenge and continued strength, endurance and performance gains. It's also a good idea to replace your bands every year, depending on use and wear - and with Lifeline's interchangeable system, it's easy! Feel the difference and try a Lifeline cable today!