Gravity Fed Water Filtration System with Adjustable Tree Strap, Large Gravity Bag with Filter Straw, Water Purifier Survival for Travel, Backpacking, and Emergency Preparedness (12L)

I used this item on a fishing trip to filter the lake water for consumption, it worked great and nobody got sick yay!

The spout is so high it only flows 5 liters. That's ok, I consider the last liter a sediment trap.

Works great as it should

Perfect size and weight

Last yr I got pretty sick,having ingested lake water housing many Beavers.I got this Gravity filter, used it for everything.Dishes, cooking, and drinking.We all had a great time and didn’t have to call the Dr. after our canoe trip.

This is a good way to process drinking water when you need more for a family or group

If you are a hiker, backpacker, or backwoods camper you need a water filter. Streams that appear perfectly clear can be contaminated with bacteria and parasites that can make you sick. This filter can remove both, but it doesn't remove viruses. Luckily, virus contamination of backwoods streams is not a big issue in the US. This filter also has a small carbon filter that can improve the taste of water, and may remove some organic chemicals or heavy metals. The water purification membrane filter has a very large capacity, while the carbon filter is good for about 300L. Even when the carbon filter is at capacity the membrane filter can still rid your water of bacteria and other critters for thousands of liters more.The filter consists of a collection bag that seems quite sturdy. It has a wide top opening which makes it easy to fill. The bag is one of those fold-over designs (like some waterproof backpacks). Which is also nice. It connects via an O-ringed connector to a hose which then connects to one of those "straw" type water filters. The filters are replaceable, but I'm unsure where you can buy them. the good news is that the filter unit appears to be a standard straw filter, and so it is likely that it would be easy to find a brand name or clone replacement. These filters can be separated from the bag system and you can use them directly connected to a water bottle if desired.These bag systems are great when you need larger quantities of water. You just fill the bag, hook it up to something higher than its outlet and fill your clean water container. Watch a video so you know how to keep everything sanitary... it is pretty easy. These types of systems are passive, you just set them up and they filter the water. The biggest enemy of any of these membrane filters is sediment, so try to get your water from the top of a flowing stream. If the only water that you can get is murky fill another container with it and let the dirt settle. Then decant into the water bag and filter. This way you won't clog your filter, which is a drag.Also, if a membrane-type filter freezes when still wet it is useless. You can find videos on how to backwash these straw-type filters, but they will still be wet inside for a while. If you have no choice keep the filter straw on your person to keep it from freezing. When you are home don't keep it in an area where it could freeze (like your garage). It is impossible to tell if a frozen filter is damaged, so if you are unsure toss it and buy a new straw, they are inexpensive.All in all, this seems like a nice unit that is considerably less expensive than the brand-name versions. Good deal!

The media could not be loaded. Except for the leak it works as advertised. Using it with a Sawyer filter. Small leak on first use, and I see no way to contact seller.