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FastFuel DryBag X Top Tube Bag

1.5 out of 5 stars
2 Reviews



Why We Like The FastFuel DryBag X Top Tube Bag

Riding through wet and windy weather in the spring and fall, or just the occasional downpour in the summer, we use the FastFuel DryBag X Top Tube bag to hold all our goodies. This highly water-resistant bag doesn't sweat getting a bit wet, keeping our food, phone, and a small multi-tool dry and out of the storm. Built with easy-to-use adjustable straps, we find it's extra easy to fit onto any bike.


  • Universal top-tube mount bike bag resists water
  • Large enough to fit most phones and small tools
  • Lightweight with a large 1L carrying capacity
  • Built to handle the toughest adventures
  • Universal fit nylon straps for any kind of ride
  • Item #TOPB050
top tube
1 main
8.9 x 3.6 x 2.4in
Claimed Weight
cycling, storage, time trial
Manufacturer Warranty
2 years

Overall Rating

1.5 based on 2 ratings

Review Summary

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

Fits True To Size

Screen reader users: the following list provides a visual scale to illustrate the product fit. Please refer to the heading above for the fit type in text.
Runs smallTrue to sizeRuns large

What do you think about this product?


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2 out of 5 stars

December 20, 2023

Opening is way too tight

I returned this product before using it

I wish I read the reviews before I purchased. They are all correct: this bag is too hard to get things into and out of. It's practically useless for a top tube bag. A top tube bag is where you want to be able to easily get things out and put things back, like your fuel. It's called "FastFuel", but it's certainly not. Your knuckles will hurt reaching into this thing. And forget having any kind of gloves on. I must return for something else.

Brian S

Originally reviewed on Backcountry.com

1 out of 5 stars

April 30, 2023

Don't buy!

I've used it several times

Super stiff bag body with a zipper "opening" that makes it impossible to put in anything other than maybe credit cards. I pried it open just enough to slide in a very light shell, one nano-meter of fabric at a time. Getting said shell out was another matter, however, with the zipper and tiny opening resulting in a torn garment. I wouldn't even think of trying to get a phone in and out of this thing!

joe5502278 j