Klean Kanteen
Klean Kanteen Classic Wide Mouth 800 ml with Loop Cap
- Weight for its size: 5/10 How much it adds to your pack for the water it holds.
- Packed size (empty): 5/10 How much room it takes up when it is empty, for the water it holds.
Day walks and camp where a plain 800 ml bottle for water is enough
- Type
- Rigid
- Capacity
- 0.8 L
- Weight
- 214 g
Packed size 1.01 L, 24.1 cm long and 7.3 cm across Compare with a 2-litre bottle
Shorter than a 2-litre bottle and thinner than one. Drawn to scale.
Where to buy
Tamarack Outdoors £22 In stock. Delivery £2.99. Brushed stainless, 800 ml. The shop's photo shows the Loop Cap. £2.99 Royal Mail Second Class under £50. Free at £50 or over.
View at shop: Tamarack OutdoorsKlean Kanteen £22 In stock. Delivery £3.95. £3.95 Royal Mail Tracked 48 (as read on 2026-10-20). Free over £40.
View at shop: Klean KanteenPrices checked 8 Nov 2026 on each shop's own page; shops can change them. We earn no commission on these links; shops are listed by price. More
Our ratings (out of 10)
1 to 10, compared with the whole market. Each says what it's based on. How we score
Weight for its size
From maker's figures 5/10How much it adds to your pack for the water it holds. 5: Does the job. Average for wild-camping gear.
Klean Kanteen UK lists 213.6 g for 800 ml (rounded to 214 g here, brushed stainless with Loop Cap): 267 g per litre, in the 180-299 g/L band.
Packed size (empty)
From maker's figures 5/10How much room it takes up when it is empty, for the water it holds. 5: Does the job. Average for wild-camping gear.
A rigid bottle does not shrink, so we draw it as a cylinder from its height and width. Klean Kanteen gives 241.3 mm tall and 72.9 mm wide: 3.1416 x 3.645 x 3.645 x 24.13 = 1,007 cm³, so 1.01 L empty for 0.8 L held (1.26 per litre), in the 0.7-1.29 band.
In short
Good for
- Day walks and camp where a plain 800 ml bottle for water is enough
- Walkers who use a bottle-thread filter: the 54 mm opening takes most backcountry filters (Klean Kanteen)
- Adding ice or a bottle brush through the wide neck
Strengths
- 213.6 g for 0.8 L is 267 g per litre, mid-range for a stainless bottle
- 54 mm opening for filling, ice and cleaning
- Loop Cap with swivel carry loop; stainless steel inside, and Klean Kanteen says it won't retain or impart flavours
- Dishwasher safe (Klean Kanteen)
Weaknesses
- Single wall: does not keep drinks hot or cold
- About 1.0 L of pack room for 0.8 L of water
- No independent test of this exact bottle found, so ease of use and durability are estimates, not reviewed scores
Sources
We haven't tested this ourselves. Every score comes from these specs, tests and reviews.