Half Gallon Water Bottle: This 64oz water bottle with straw has a leakproof 2-in-1 lid to prevent leaks. Hydration Tracker: The water bottle has a time marker to help you track your daily water intake and develop positive habits. Dual Function Lid: The 2-in-1 lid allows you to chug or sip without changing the lid. Durable Material: Made from BPA-free acrylic plastic that is durable for home, gym, or work use. Stylish Design: Available in 12 unique designs that make great gifts for women and men.