Zen Active High-Density Exercise Foam Roller - Ultimate Leg Massage Machines - 13 Inch Length, 5 Inch Diameter, Two Pattern Design with the Ideal Mix of Firmness and Pliability, Won&rsquo;t Lose Shape TWO PATTERN DESIGN - Ridged pattern delivers deep tissue massage; smoother pattern distributes a gentler massage; improves overall core strengthening EASE MUSCLE TENSION - Relieves soreness and increases circulation before and after workouts; ideal warmup to help prevent muscle injuries; foam roller stretches strengthen back, neck, legs, and calves; increases flexibility WONT LOSE SHAPE - Non-slip, highly-compacted EVA workout roller foam withstands repeated use; retains its shape; wont break down LIGHTWEIGHT AND PORTABLE - Essential home gym equipment; ideal for yoga, Pilates, self-massage, sport rehabilitation and physical therapy; can be used anywhereany time; easy to store SATISFACTION GUARANTEED - Order with confidence. Your Zen Active Exercise Roller is backed by manufacturers no-hassle money back guarantee.