Athverv Shakers are BPA and Phthalates free, made of food-grade plastic that keeps your supplements stay clean, safe, and free from bacteria, Athverv shakers bottles are rigorously tested against other shakers to ensure you get the best shaker bottle on the market. Shaker bottle comes with an integrated stay-open flip cap latch to prevent the cap from closing on your nose. Its rugged, durable, and sturdy design is freezer safe and dishwasher safe. Bottle contents and liquids are securely contained by a watertight screw-on leak-proof seal so you don’t have to deal with any leaks or spills. The bottle is designed from non-slippery material and comes with gripper bars that offer a firm grip that’s easy to hold. Its tapered sleek design, rounded base fits, most car and gym equipment cupholders. Kitchen grade stainless steel blender ball whisk whips every last bit of the protein powder giving you a perfect mix until the last drop, it mixes drinks to a smooth perfect blend every time. Ideal for protein shakes, pre-workout, post-workout, smoothies, fiber drinks, and meal replacements. Embossed markings show both ounces and milliliters on an obround translucent shape for easy measuring. Bottle storage capacity is 700ml, please note marking only go up to 600ml. Athvere shaker bottles can be used as a water bottle with or without the whisk ball in it, blender ball whisk is made of kitchen-grade stainless steel which will not peel, rust, or chip.