TIGHT AND STRONG SEAL: The non-leakable, seal flip cap secures the screw-on lid, with a strong leak-proof lid to prevent leakage and seeping. , EASILY CLEANED: 600ml protein shaker, has the easiest cleaning method, by just splashing and rinsing it, with water, the stains and liquid waste, comes right off, leaving you with clean and shiny shaker. , EASY TO HOLD: Our protein shakers are ideal for mixing protein shakes, smoothies, and greens drinks. They're fit perfectly in your hand. They also fit most car holders, and the mixer comes with a grip lines, with makes holding it, easy and smooth. , METAL BALL: Comes with a wire ball for easy, lump-free mixing. Great for any type of protein products and supplement, it mixes in seconds. , LONG LASTING: Our shake bottle mixer is made from BPA-free plastic and is dishwasher safe. Designed and carefully selected by professionals.