The LifeStraw Peak Series 3-in-1 Water Filtration Kit is your go-to for safe water during your outdoor adventures. This modular water filter system is designed to work interchangeably as a straw, a squeeze bottle, or a gravity system to drink safely from lakes, rivers, and streams or to fill a container. The kit includes the ultralight Peak Series Solo Water Filter, 650mL Squeeze Bag, and the 3L Gravity Bag with hose, along with a cap and backwash syringe to help you filter faster for longer.  The system filters out bacteria, parasites, microplastics, silt, sand, and cloudiness. Your purchase has impact: for every LifeStraw product purchased, a child in need receives safe water for an entire year.