What is a soft flask: The soft flask is made of soft resin and can be stored compactly when the contents are reduced. Easy to drink anywhere and anytime for sports Foldable soft flask Since the cap does not open or close, it is easy to drink, and it can be gently bitten and sucked into the mouth
How to drink a soft flask: This soft flask has 3 types of capacities of 16.9 fl oz (500 ml), 11.8 fl oz (350 ml), and 7.8 fl oz (200 ml). The soft flask allows you to drink the contents by lightly chewing the mouth of the drink and squeezing the bottle. Squeeze the bottle to push out the water so you can supply water without facing upward
Compact Storage: Made of flexible and soft material that fits perfectly in your pocket. Flask compresses when drinked, so you don't have to worry about water bouncing or swaying. You can also check the exact amount of remaining charge at a glance. The soft flask has a soft vinyl body that can be folded up compactly when not in use. When not in use, the soft flask can be stored compactly, so it won't strain your luggage
Material: Made of BPA free, food grade, BPA free silicone and durable and flexible TPU (Thermoplastic Polyurethane) Non-toxic, odorless, and highly safe. The new bottle has a little smell. Before first use, you can put it in rice juice, green tea, sugar corn or vinegar to reduce the odor. In addition, we recommend washing with baking soda. Applicable temperature: 32 - 104°F (0 - 40°C). To prevent dirt from the mouth, the spout has a dust-proof cover
(Soft so it won't hurt your body when you wear it) If you use a solid hard bottle, it is stiff and may cause pain on the parts of your body when you use it for a long time. For soft flasks, it is soft and will not cause pain even after long time use