1. Clear design, easy to observe the remaining capacity and choose your favourite beverage. 2. The bottom is self-supporting, standing in a self-supporting manner, and more three-dimensional. 3. Wide easy-grip ergonomic handle. Thick strong material for long lasting use. 4. Lightweight and portable, easy to fold after drinking, not occupy space. 5. Perfect for bringing water, wine, whiskey, cocktails, spirits, beverage, juice, tea, milk, etc.