DescriptionThis product is suitable for computer owners, often sitting in front of the computer cervical pain, it rolled, immediately felt a lot of pain relief. Physically and mentally relaxed. Stimulate blood flow to help remove blood from the effect of pain and fatigue factor.Features- Color: Black.- Material: Obsidian.- Size:11 x 2 x 2cm.- Used for leg, arm, back, neck, waist etc.- Size fits conveniently inside your sports bag.- Will relax and relief even your most cramped and tight sore muscles for a quick recovery.- Perfect for athletes, runners, gym rolling, sprinters, fitness, marathons or even beginner athletes.