Bests & Worsts Reviews from Amazon

I was heading out to Grand Teton National Park for a week and was looking to buy a water filter. I was surprised at how expensive many of them were! Seeing as how I am a casual hiker, I did not need a $100+ water filter. I just needed something for long day hikes where I would likely drink all of the water I had brought along. This water filter was perfect for that. I filled up two nalgene bottles and once I drank the first, if I needed more water I filled the empty at the nearest water source and the life straw worked perfectly for sipping along the trail. One word of caution, if you have a nalgene with a narrow mouth opening, the life straw WILL NOT fit so make sure you have a wide enough opening. The description shows a 1 inch diameter but there is a plastic cover on the bottom to protect the filter that is attached by a thin piece of plastic. I uploaded a photo showing the LifeStraw trying to fit in a narrow mouth nalgene. As you can see it does not fit and even if you cut off the plastic piece it is still too thick, at least for the nalgene in the photo.