Membrane Solutions 1-Gallon Gravity Water Filter with 4-Pack S2 Water Filter Straws

1-Gallon Gravity Water Filter — Portable Camping Water Purifier

Quick Overview Lightweight, compact and easy to use, this 1-gallon gravity water filter delivers safe drinking water anywhere — ideal for camping, hiking, travel, and emergency preparedness. The system provides reliable filtration without pumps or electricity.

Key Features - 1-gallon capacity: Holds enough water for personal use or small groups while remaining compact for packability.
- 4-stage filtration system: - 0.1-micron hollow fiber ultrafiltration membrane for reliable particle and pathogen removal - Coconut shell GAC (granular activated carbon) for improved taste and chlorine reduction - Double PP fiber pre/post-filters for sediment capture and extended filter life
- High purification performance: Removes odors, chlorine and heavy metals; filters up to 5,000 liters of outdoor water.
- Superior backwash solution: Detachable mouthpiece connects to common water bottles for fast backwashing — no syringe or bulky fittings required.
- Versatile use: Use as a gravity filter, a direct-use water straw, or connect to water bottles and extension tubes for more distance and flexibility.
- Easy to hang: Adjustable one-piece tree strap fits trunks from 22.5" to 41.5" (57–105 cm).
- Safe materials: Food-grade, BPA-free construction for safe drinking water.
- Portable kit: All parts stow neatly in the included storage bag for easy transport.

How This Helps You - Save weight and space: Filter on-site instead of carrying heavy water.
- Reliable in the outdoors: Consistent filtration performance for camping, backpacking, and emergency use.
- Low maintenance: Simple backwash with any bottle keeps flow fast and extends filter life.
- Flexible setup: Multiple use modes let you adapt the system to bottles, bags, or hang it from a tree for hands-free dispensing.

Quick Usage Steps 1. Fill the 1-gallon bag with source water.
2. Hang the bag using the adjustable strap.
3. Let gravity feed water through the 4-stage filter into your container.
4. Backwash via the detachable mouthpiece connected to a common bottle to maintain flow.

Trusted for outdoor use and travel, this gravity water filter combines ultrafiltration, activated carbon, and easy maintenance to give you clean, great-tasting water wherever you go.