The Huku Cork Massage Ball is designed to relieve tension and soreness in your body's "micro" muscles. Rawly Micros are ideal for massaging your fingers, hands, wrists, feet, and jaw. A favorite for hikers, runners, and climbers, they also work great for reducing the pain associated with repetitive stress and overuse injuries. Perfect as trail, travel, and desk companions! The solid natural cork ball is also perfect for spot massaging for calves, quads, glutes and back, an ideal therapy for plantar fasciitis and more. Warm to touch and has natural anti-microbial qualities.