Azarxis TPU Soft Flask Collapsible Water BottleSPACE SAVING & LIGHTWEIGHT Only 36g for each soft flask (without straw), ultra light and easy to handhold. The foldable water bottle can be folded into a compact size, about 6cm, very convenient to put into backpack pocket EASY TO FILL AND DRINK With a wide opening, it's more convenient to fill water into the water bottle. When you drink water, just nibble or pinch the bite valve and the water can be easily discharged WIDE USE The handheld sport gel