The curves are designed to create a more comfortable and versatile self massage/foam rolling experience. Ordinary foam rollers don’t usually have anything that will protect your spine and peripheral nerves in the sensitive areas of your body, but the Rehab Roller will allow you to comfortably roll your muscles without pinching the sensitive structures of the body, by taking advantage of the rollers curves. For example, with the main curve in the foam roller you can foam roll the muscles around your spine called the paraspinals. These muscles commonly get tight and achy and could use some TLC. The curve is designed to work like a double lacrosse ball, or peanut roller, which is a fitness product that is used mostly for massaging and rolling the spinal muscles. People commonly foam roll their neck, upper back, or low back, but with the spine in the way this can sometimes be uncomfortable. The curves in the roller allow you to comfortably get around the spine and gently inhibit, nourish, and release the muscle tension in your paraspinals. Additionally, you can use the curves to avoid other bony structures like those in the forearms and shins, the shoulder blade, and hips. By avoiding these prominent bony landmarks, you can get into your muscles a little deeper and target muscle knots that cause trouble.