Step 1: Unscrew the top part from the bottle and fill the bottle.
Step 2: Screw the top part back onto the bottom part of the bottle.
Step 3: Enjoy safe water by sipping through the mouthpiece.
Make sure the filter is appropriately adjusted to the top part by pressing it into the lid.
LifeStraw Play will no longer filter water when the product has reached the end of its working life.
Inability to sip water through LifeStraw Play indicates that the hollow fiber membrane filter should be replaced.