Rugged Arc Bottle is a good for mixing protein drinks or energy drinks (even water) at gyms, yoga studios, or other places including during outdoor activities. Bottle comes with liquid measurement markings and you can plan your liquids accordingly. This bottle is of good quality and comes with Leak Proof technology. BPA (Bisphenol A) Free Anti Leak Technology Highly Durable Volume: 700 Ml Good for Protein Shakes, Energy Drinks, and other liquids such as water Material: Plastic