This 18\" long Blue coloured Thera-Band LOOP offers a level of resistance that is rated as extra heavy and is a comfortable alternative for tying bands into loops.Thera-Band LOOPs are ideal for lower extremity, shoulder, neck, core and back applications and are available in a range of four colour-coded levels of resistance and in three different lengths, all of which are available in this section of the shop. Proper use of the Thera-Band system for resistive exercise provides the user with both positive and negative force on the muscles, improving strength, the range of motion and cooperation of muscle groups. The colour-coded progressive resistance levels allow clear, structured and visual documentation of progress from one level to the next.With the Thera-Band LOOP, measuring a users progress and achieving goals for fitness or therapy is easier than ever before. The different resistance levels are determined by the thickness of the LOOP in use with the colour-coded levels increasing in difficulty from the easiest, Yellow (Light), to the hardest, Blue (Extra Heavy). The Comprehensive system provides positive reinforcement and feedback for gauging results.The Thera-Band brand is trusted and respected around the world, and this Thera-Band LOOP is used extensively in the NHS.