Cold water is non-negotiable on summer rides. Years ago, CamelBak’s Podium Ice saved me more than once, and I wrote in a past article that it was the only choice for high-summer bottles. Since then, stainless steel vacuum-insulated bottles have arrived from nearly every brand, and the standard for insulated bottles has shifted. My pick for the new era is Abloc’s insulated bottle, Acier. After more than a year of use, here’s my review.
text / Tats（@tats_lovecyclist）
Specs
Abloc Acier（$49.99）
| Capacity | 650ml (22oz) |
| Weight | 330g (claimed) 350g (measured, with included silicone band) |
| Construction | Double-wall vacuum insulation + internal copper core |
| Cold retention | 14+ hours (claimed) |
| Mouthpiece | Silicone (disassemblable) |
| Price | $49.99 |
Abloc is a San Francisco-based bottle specialist whose lineup consists of the resin ARRIVE and the stainless steel Acier.
What stands out about Acier’s construction is the copper core inside the double-wall vacuum structure. The copper reflects radiant heat, applying the same principle used in high-end thermal flasks. Note that Acier is designed exclusively for cold beverages, and the manufacturer prohibits use with hot drinks due to burn risk.
A stylish package that speaks to sustainability
Why I switched
The Podium Ice that served me faithfully for years
When I introduced CamelBak’s Podium Ice back in 2020, I wrote that it was the only choice for high-summer bottles. Four times the cold retention of a standard bottle meant a couple hours of ice-cold water, which made it the only real answer among the options available at the time.
That said, it had a practical limitation: you needed to top up ice regularly, so making the most of its cooling effect meant planning your ride around convenience store stops.
In the meantime, stainless steel bottles with even stronger cold retention emerged from various brands. The reason I didn’t jump ship immediately was that most stainless bottles simply weren’t designs I wanted to slot into my bottle cage.
I didn’t want something that looked like a straight-up thermos, and I’d heard from others about issues with cleaning and drinking. Acier solves all of that.
Pros & Cons
Pros
Design: In the stainless insulated bottle category, Acier, designed between San Francisco and Austin, is the only one I actually want to use. It’s neither a monotone all-stainless slab, nor does it have a thermos-flask mouthpiece. The silhouette is clean and purposeful.
Two-tone black and silver, slim and elegant
Ease of drinking: Tilt the bottle and just the right amount of water flows out. You can’t squeeze the body to force out a large volume like the Podium Ice, but in practice, having water come out simply by tilting turned out to be its own kind of convenience. When you want a bigger gulp, just suck: the flow matches your draw.
Pull the mouthpiece up to unlock, and it flows freely when open
Cold retention: A lifesaver. The claimed 14 hours is almost academic, because in high summer it’s so hot you’re refilling every 2–3 hours anyway, meaning the water never gets a chance to warm up. Even in cooler seasons, your body still runs hot on the ride, and there’s real gratitude in reaching for cold water without having to plan for it.
Stays cold, and cold, and cold
Easy to clean: The mouthpiece disassembles, so no grime sticks around. The body is dishwasher-safe, but the mouthpiece needs to be hand-washed.
Always clean
Cons
Scratches more easily than you’d expect: The distributor’s site notes that “the lower body is bare stainless, so you can use it without worrying about scratches,” but the nuance is more like “there’s no paint to chip.” Stainless surfaces are inherently vulnerable to scuffing, and simply inserting and removing the bottle from the cage leaves marks. This isn’t a flaw specific to Acier so much as a reality of metal bottles in general.
Since the out-of-box finish is so beautiful, scratches sting a little
On cage compatibility
Unlike resin bottles, stainless bottles don’t flex, so cage compatibility becomes a very real concern. When I had mine in a Supacaz cage, the Acier launched itself over a bump.
Stainless bottles don’t play well with loose cages, so I’d recommend high-retention cages like those from Elite or Arundel. Personally, I’m running a Polymer cage right now with no issues at all.
Verdict
The new answer for high-summer bottles: this, and only this. Six years ago when I called Podium Ice “the only choice,” it was the best answer within the resin bottle world. This time, with stainless now the mainstream, the pick has been recalibrated from scratch.
On cold retention alone, the leading brands have essentially caught up to each other. Every large-capacity model, Acier included, holds cold for over 10 hours, and the competition is now fought over the next 2–3 hours of margin.
That’s exactly why Acier’s execution stands apart. It looks beautiful in the cage, the disassemblable valve keeps it perpetually clean, and the flow rate is dialed in for effortless drinking. At $49.99 it’s priced slightly above rival brands, but nothing else satisfies on every front the way this bottle does.
Author
 | Tats Shimizu（@tats_lovecyclist） Editor in Chief & Photographer with 12 years of experience on sports bikes. He maintains close relationships with brands around the world and proposes a wide range of styles through the media, while also working as a photographer for numerous cycling brands in Japan and abroad. His main bikes are Standert (road) and Factor (gravel). |
