Sportsun Easy to Clean Silicone Collapsible Water Bottle for Sports Camping Hiking with Great Capacity 17 OzPack of 2 Blue and Pink We designed the bottle with the ideal size 17 OZ for your outdoor activity or for your children to drink. We made the bottle 100% leak proof with a rotational thread design for a better sealing. We created it collapsible for an easy transport, it can be folded to 1/5 of its 17OZ size, it will take less space in your backpack. We made it with safe and high quality food grade silicone FDA approved and BPA Free. You will be able to freeze it to keep your drink cold for hours. We made the bottle microwave and dishwasher safe so you will be able to use it as you like.