Lacrosse Balls are a simple, cost effective way of increasing your mobility and breaking up knots in those hard to reach areas which a foam roller can't. They are great for myofascial release, deep tissue massage and trigger point therapy. Our double Lacrosse ball is ergonomically designed for focused pressure on linear areas such as Spinalis muscles, hamstrings and calves. Ball diameter: 6cm. Full length: 12.5cm. Weight: 325g. Material: Silicone.