Retention hours only compare when the stated conditions match · review
A 0.75 litre flask that publishes a cold figure and no hot one, and whose rubberised screw stopper is stated to hold carbonated drinks.
The bottom line A clean, honest cold bottle with the best-described stopper in the hub. It publishes one retention figure out of two, and the missing one is the one the name implies.
A 0.75 litre double-walled stainless flask with a rubberised screw stopper, stated to be 100% leak-proof including with carbonated drinks, and stated odour- and taste-neutral.
The title publishes 24 hours cold. Nothing in the title or the bullets publishes a hot figure. Under a name built on coffee, that is a conspicuous omission, and it is reported here as an omission rather than guessed at.
The 24 hours arrives with no conditions, like every other figure in this hub.
This is the closure the hub describes best. A rubberised screw stopper, stated to open easily without slipping, holding pressure from carbonated drinks. Nothing is said about spare gaskets, which is the standard silence here.
No steel grade. No mouth diameter. No base diameter, on a bottle argued to be slim enough for any bag. No empty weight, behind the word light.
If you want one bottle for hot and cold, note that only the cold half of the claim is published here.
Selling between 19 € and 27 € across the German, Italian and Spanish Amazon stores when this page was checked.
It also sells on the American and British Amazon stores in the local currency, which the range above does not cover — that range counts euro stores and nothing else.
The French Amazon price sits more than 1.6× above the cheapest store. That gap usually means a reshipper rather than a local seller, so that listing is kept out of the range above.
Every figure in this section is what Keepa returned on the day this page was last updated. Prices and offers change without notice.
Prices quoted in this text were read on 6 September 2026. The live price is at the top of the page.
| Capacity | 0.75 litres — stated in the title |
|---|---|
| Wall construction | Double-walled — stated; the listing does not use the word vacuum |
| Steel grade | Not published on the listing — stainless steel is named, with no grade |
| Hot retention | Not published on the listing — only a cold figure is published, and no hot equivalent appears anywhere in the listing |
| Cold retention | 24 hours — stated in the title |
| Retention conditions stated | Not published on the listing — no starting temperature, ambient temperature or fill level is given behind the 24 hour figure |
| Mouth diameter | Not published on the listing |
| Lid type | Rubberised screw stopper — stated, described as easy to turn without slipping, and stated 100% leak-proof including with carbonated drinks |
| Seal availability | Not published on the listing |
| Base diameter | Not published on the listing |
| Finish | Stainless steel — stated in the title; no coating or colour treatment is named |
| Empty weight | Not published on the listing — the flask is described as light and slim, with no figure |
| Amazon reference | B07K1TGY6F (same reference on 6 Amazon marketplaces) |
| EAN | 5010576949165 |
The listing does not say. It publishes 24 hours cold in the title and no hot figure anywhere, which is unusual for a flask carrying this name. This page reports the absence rather than filling it in from the brand.
The maker states the bottle is 100% leak-proof including with carbonated drinks, and makes the point twice. Two other flasks here make the same claim. What none of them publishes is a replacement gasket, and the gasket is the part that carbonation works on.
500 ml · vacuum insulated · SUS 201 outside and SUS 304 inside · 24 h cold and 12 h hot stated · brushed finish · top handle
The only flask here that names a different steel for the inside and the outside, alongside a stated vacuum, both retention figures and a brushed finish.
Best for: A day out where a named inner steel, a stated vacuum and a dishwasher-safe body matter more than the hours quoted.
≈ 13 €
1 litre · 18/08 stainless · 13 h temperature stability stated, hot and cold not separated · bottle brush, jute bag and carabiner supplied
A 1 litre flask supplied with a natural-bristle brush and a carabiner, whose single retention figure of 13 hours is never split into hot and cold.
Best for: A litre bottle bought with its brush and its carry loop, where cleaning matters more than a comparable hours figure.
≈ $33 / £24 / 29 €
18/8 stainless · double wall · 24 h cold and 12 h hot stated · three lids supplied · powder coat · capacity not published
The flask with three lids in the box and both retention figures on the page — and no capacity anywhere in the listing, which is an unusual thing to leave out.
Best for: A walker who wants a straw lid on the trail and a plain lid at work, from one flask.
≈ £10 / 11 €
