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Water Bottle

3 out of 5 stars
4 Reviews



Water Bottle

There's nothing worse than feeling parched on a long, hot ride. But if you brought along the Castelli Water Bottle, you'd be enjoying a nice, refreshing bottle of water or electrolyte mix. This water bottle features Castelli's Purist technology, which prevents residual taste and stains, while the MoFlo valve is quite easy to open and assures leak-proof performance.


  • Castelli-branded water bottle for all your hydration needs
  • MoFlo valve prevents leaks
  • Easy to clean opening makes post-ride maintenance simple
  • Item #CSTZ79J
18.6oz (550mL)
Manufacturer Warranty
1 year

Overall Rating

3 based on 4 ratings

Review Summary

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

Fits True To Size

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Runs smallTrue to sizeRuns large

What do you think about this product?


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5 out of 5 stars

November 27, 2023

Great fit

I've put it through the wringer

Combined w side entry cages, these flexible bottles work well w my gravel bike which has limited space due to frame bag.

Kao C

Originally reviewed on Backcountry.com

2 out of 5 stars

January 31, 2021

Fragile Cap

I've used it several times

At the second week of use the cap broke, I still can drink from it but its annoying that I spill everytime I drink.

Sergio A
2 out of 5 stars

January 26, 2021


I've used it several times

Great idea but the lid is maybe a little to fragile. Dropped a bottle on the floor in my kitchen after filling it before a ride... not a hard impact by any stretch but broke the bottle. Glad I had a camelbak podium for back up.

Len B
3 out of 5 stars

June 27, 2020

Too flexible, easily marred

I've put it through the wringer

Didn't take long for this bottle to get totally &#$$#% by my cage. Also, the flexibility that makes it so nice to drink from is a problem. On long descents the altitude change makes it crumple onto itself, and it's then ready to bounce out of your cage. OK for riding the flats in kansas, but if you ride in the mountains get something more solid.

Patrick F

Originally reviewed on Backcountry.com