Speedfil Speedflask 21oz
Top PickWhat We Like
- One-thumb push-button lid opens and closes without shifting hand position mid-ride.
- Vacuum insulation keeps drinks cold for four-plus hours, with ice often surviving the ride.
- Premium stainless steel body with no plastic taste or odors.
Worth Noting
- Exterior paint scuffs easily from standard cage contact, showing wear quickly.
- Lid can break if the bottle is dropped, and replacement parts are not sold separately.
- Weight
- 13.4 oz
- Cage Fit
- Fits standard cages
- Material
- Stainless steel 18/8
- Lid Design
- Push-button Bounce Back
Read the full review
The Speedflask’s push-button lid lets you drink without breaking your grip on the bars, a clear edge over the top pick’s standard bite valve. Vacuum insulation holds ice for hours, but the stainless steel body adds noticeable weight compared to plastic bottles — and the painted finish marks up from normal cage contact.
Best suited for road cyclists who value quick hydration access and ride three-plus hours in heat. The lid mechanism can fail if the bottle is dropped, and replacement parts are hard to find — a trade-off worth weighing if you tend to toss bottles around.
Carry a spare bottle for days when you might drop it — the lid is not easy to replace.
Bottom line: If one-hand hydration is your priority and you can accept a scuff-prone finish, the Speedflask delivers the fastest lid in the category.