Bubi Bottle, made from food-grade silicone, the most eco-friendly water bottle combined with durability, fashion, and convenience. As a sports water bottle, the 35 oz bottle is essential for outdoor activities, workout, hiking and completing your hydration goal. (64 oz. daily). Therefore, the larger is a fan favorite for tailgate days, hiking trails, or a day at the beach. Incredibly, freeze it before you go and the Bubi water bottle rolls up to fit into your purse, pocket or backpack.