Ideal travel companion to all travellers and outdoor lovers, the LifeStraw Peak Series Compact Gravity Bag water filter system allows you to filter and purify water in an easy and safe way. This pouch features a sturdy and durable construction and offers a 3-litre capacity. Highly versatile, this filter can also be used as a large squeeze bottle, as a straw, or use the filter with a water bottle. Its integrated hook allows to suspend the pouch to a branch or simply to your RV. It is the simple and compact option for backcountry camping and backpacking.