Great addition to your kit giving more functionality to a very functional product.

It holds water. Have not used it yet. Hopefully I never need to.

I’ve bought cases of bottled water for years. Sorry to the environment. I couldn’t stand the taste of Texas water. I finally purchased an in home water Softner & purifier. I purchase the Grayl for my planned International trip. I tested it & compared

Nice size and well made in America. I love the Tropical Multicam.

Well made. Robust construction. Nests well with full-sized Grayl. Expands water purification options (boiling). Unless going ultralight, no-brainer to buy!

This is my second purchase of this product — I liked the first one so much! Fast. Easy. Convenient. Filters out just about everything. Decent size considering it is both a water bottle and filter. Tough construction. High visibility. Two caveats: (1)

Big fan I think too much fussing is made about the cork. Firstly it's not 100% necessary, and and secondly it's about $2 to replace. But for the least fiddly option to clean out of a lid that has the option to close this is it.

I can’t think of a better or more convenient way to have the drinking water I need while out. It’s perfect.

Yummy

Love it !