Deep roller single (S100) Spinal Fitness Equipment - Foam rollers developed by physical therapists - Foam roller that helps maintain proper posture by deep stimulation of spine and fascia through rolling movement - It is the patent product that applied mechanical joint structure stretching spine to foam roller - Deep Roller Exercise can solves Spine Health Care - The design allows the joints of the spine (cervical spine, thoracic spine, ribs, lumbar spine, sacrum, iliac bone) to return to its normal position with acupressure exercises using own weight. S100 Specification: Material : Environmental EPP Areas : Neck, Back, Waist, Hip, Thigh, Calves, Feet Size : 10cm x 50cm Weight : 165g