Nivia street sports shaker is designed for smooth mixing protein drinks at gyms or for energy drinks for outdoor sports. It comes with rounded bottom which reduces clumps. 100% Leak proof as it comes with screw tight lid. The secure screw lid top ensures no spills whilst the wide spout and 'flip cap' offer an easy to use. It has 750 ml capacity and large spout for easy drinking. Shaker comes with measurement scale in ml to prepare drinks in appropriate quantities. Dishwasher safe- easy to clean, freezer safe, bpa free