Enjoy clean drinking water anywhere with the 3L Gravity Water Filter Straw System. Designed for outdoor adventures and emergencies, this filtration kit removes up to 99% of harmful impurities from natural water sources such as rivers, lakes, and streams. With its large 3L gravity-fed design, it provides safe and fresh water for groups and families without the need for pumps or power.

This high-efficiency purifier combines a 0.1-micron hollow-fiber filter, activated carbon fiber, and dual PP cotton layers to deliver 4-stage filtration. It removes sediment, bacteria, microplastics, and other contaminants while preserving the natural taste of water. Capable of filtering up to 5000 litres at a flow rate of 500ml per minute, it’s a must-have for camping, hiking, backpacking, and survival kits.

The included 3L gravity water bag is made from food-grade, ultra-durable material. Simply hang it on a tree or elevated surface and let gravity do the work — no pumping or squeezing required. The straw can also be used directly from a water source, connected to a water hose, or attached to standard 28mm water bottles such as Smartwater or CNOC.

Features:

• 4-stage advanced filtration – PP cotton, activated carbon, and 0.1-micron hollow-fiber membranes
• Removes 99% of bacteria, particulates, and sediments
• Filters up to 5000 litres of natural water
• Flow rate: 500ml/min for fast and clean hydration
• Large-capacity 3L gravity-fed water bag for group use
• Food-grade, durable, and leak-proof materials
• Compatible with standard bottles, hoses, and bladders
• Easy to use – hang or elevate for hands-free filtration
• Lightweight and compact for travel, camping, and emergencies

Specifications:

• Brand: Membrane Solutions
• Model: Personal Water Filter Straw
• Filtration Method: 4-stage (Double PP Cotton, Activated Carbon, Hollow Fiber)
• Filtration Accuracy: 0.1 Micron
• Flow Rate: 500ml/min
• Filter Capacity: 5000 Litres
• Size (Filter Straw): 7.1 inches
• Capacity (Water Bag): 3 Litres
• Material: Food-grade plastic and PP components
• Leak-Proof: Yes

Applications:

• Outdoor activities: camping, hiking, backpacking, fishing, and hunting
• Emergency preparedness: floods, power outages, or survival kits
• Water sources: lakes, rivers, streams, rainwater, and tap water

Package Includes:

• 1 x Gravity Water Filter Straw
• 1 x 3L Water Bag
• 1 x Tree Hanging Strap