Leak-proof gym accessories from Fighters Only are a great way to both show your support for one of the biggest MMA magazines in the world & stay hydrated through the day. Ideal for mixing & holding your supplement shakes. The lid has an easy-pour spout to reduce leakage or mess, & is easy to screw on/off. The metal spring ball thats included in the purchase mixes powder into liquids without retaining clumps & is very easy to clean. A large Fighters Only logo is printed vertically on the side of the Shaker. 600ml capacity.