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GSI Outdoors
Water Cube

2.5 out of 5 stars
2 Reviews

Out of Stock

Don't worry though, we have a lot more Water Reservoirs in stock than that.

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Water Cube

The GSI Outdoors Water Cup practically packs flat so you can take it on faraway backpacking trips through the alpine. Made with food-grade polyethylene, this water container compresses, collapses, and is a convenient choice for any camping trip. Its tap handle delivers a high flow rate so you can get the final drop before you have to go filter another round.


  • Compressible cube for water storage on backpacking trips
  • Food-grade polyethylene folds for convenient storage
  • Ergonomic tap handle delivers high flow rate
  • Item #GSI003Z
10, L, 15, L, 20, L
[10L] 8 x 8 x 2.5 in, [15L] 9 x 9 x 2.5 in, [20L] 10.5 x 10.5 x 2.5 in
Claimed Weight
[10L] 6oz, [15L] 7.5oz, [20L] 10.1oz
Manufacturer Warranty

Overall Rating

2.5 based on 2 ratings

Review Summary

1 Stars - 0 reviews
2 Stars - 1 reviews
3 Stars - 1 reviews
4 Stars - 0 reviews
5 Stars - 0 reviews

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3 out of 5 stars

October 9, 2023

Broken cap

I've used it several times

The cap broke on my reservoir after 10 trips or so. The valve seized for some reason (not frozen) and tore on a joint. I might be able to fix it with glue, but I'll probably just get a replacement. It's an ok reservoir for the price, but about what you expect.

Seamus M
2 out of 5 stars

August 5, 2022

Not durable

I've used it once or twice and have initial impressions

Started leaking before our 2nd trip. I imagine this was due to the plastic folding, which it is not built well for. If you buy this I would recommend keeping it in its square shape as much as possible.

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