Katadyn Pocket Water Filter
https://www.rei.com/product/653573/katadyn-pocket-water-filterKatadyn Pocket Water Filter: The Ultimate Guide With Expert Tips
https://www.youtube.com/watch?v=dLEkARHYj1wThe Big Berkey vs the Katadyn water filtration system what is better?
https://www.youtube.com/watch?v=MpJBWOhPWz8Thermolite Reactor Extreme Sleeping Bag Liner
https://www.rei.com/product/797114/sea-to-summit-thermolite-reactor-extreme-sleeping-bag-linerConstructed of insulating Thermolite® fabric, a hollow-core, breathable fiber that provides extraordinary warmth for its weight Adds up to 25°F of warmth to a sleeping bag; can also be used as a summer ultralight sleeping bag Liner helps keep the inside of your bag clean, saving it from the wear and tear of washings Drawcord hood with mini cordlock cinches around face to hold warmth in Mummy shaped liner features a 3D footbox providing plenty of room for feet
I overestimated Sea to Summit Reactor Extreme Liner
https://www.youtube.com/watch?v=5JyWF_R1nwQDude at REI recommended looking into sleeping bag liners for couch surfing
https://www.rei.com/search?q=sleeping+bag+linerEnd of results