Foam rollers for muscles are one of the single most effective tools to help with your fitness routine-before, during, and after exercise-or just to loosen up sore, tight muscles. At other times they are also used in physical therapy settings under the supervision of a physical therapist. Foam rollers enable us to self-apply myofascial release to our muscles, which releases knots, tension and soreness. Our foam roller has a hollow, high-density core, that increases the stability and allows for up to 550 lbs of weight, with the ability to keep its shape. Safe and effective, it is non-slip allowing it to roll with you and remain stable during use. Many other foam rollers will collapse during use, or get divots and scratches, not lasting as long. This foam roller is large enough to be effective, and small enough to travel with. The V-shape in the design, known as "The Arrow," is great for targeting prime areas needing a gentler touch, while the nodules provide a deeper massage experience to trigger points that are in need of greater relief. This foam roller for back, calves, thighs, gluts and more is a perfect tool to increase blood flow and oxygen in specific areas to help heal tissue. FREE instructional videos are available. Check your email after you order to receive access information. Utilizing these videos is HIGHLY recommended so that you can get the most and best use from this roller. Modifications are shown for those that are new to foam rolling or have difficulty doing the traditional movements. Also, exercises are shown to challenge even seasoned fitness-goers. A full range of options is provided to accommodate a wide range of fitness and ability levels. Everybody from the first-time user to the fitness enthusiast loves the benefits that the foam roller provides! Go ahead and buy one for your workout partner or someone you know that would benefit from the positive health effects of foam rollers.