KYLIN SPORT 7 Ft Floss Mobility Bands Crossfit Compression Muscle Recovery Band Resistance Strap RED Mobility Band measures .051" Thick x 2" Wide x 7' Long BLACK Mobility Band measures .060" Thick x 2" Wide x 7' Long Floss bands improve movement range, restore joint mechanics, or release previously injured tissue while performing the actual athletic movement the athlete is trying to improve. The black band is thicker and measures. This provides more compression and is better suited in difficult areas like the high hips. This band is also great for larger athletes like powerlifters and strongmen when more compression is needed. These compression bands encourage blood flow, increase the circulation and warm up the muscles. They help relieving pain, accelerating recovery, promoting flexibility and increasing the range of motion.