Icebreaker
Icebreaker 260 Tech Long Sleeve Crewe (men's, size M)
- Weight: 1/10 How much it adds to your pack.
- Warmth: 9/10 How much the fabric insulates next to your skin. Heavier fabric is warmer and slower to dry.
Cold-weather hill days and winter walking under a shell or insulated jacket
- Weight
- 310 g (M)
- Fabric weight
- 260 g/m²
- Fibre
- Merino
- Merino
- 100%
Where to buy
Alpinetrek £89.21 In stock. Free delivery. Size M in stock in every colour (all colours the same price, list £104.95). Free delivery from £85.
View at shop: AlpinetrekIcebreaker £104.99 In stock. Free delivery. Black, size M. Free standard shipping over £40; free returns.
View at shop: IcebreakerNevisport £104.99 In stock. Free delivery. Black, size M: the only colour with sizes on offer now (Topaz, Monsoon and Midnight Navy have none). Free UK delivery over £79; £2.95 standard below £79.
View at shop: NevisportPrices 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
From maker's figures 1/10How much it adds to your pack. 1: A real weak point.
310 g in men's size M (Icebreaker UK) is in the 280 g+ band. Alpinetrek lists 320 g for its reference size L, which fits.
Warmth
From maker's figures 9/10How much the fabric insulates next to your skin. Heavier fabric is warmer and slower to dry. 9: Among the best you can buy for this.
260 g/m² is in the 240 g/m²+ band. The figure is the number in the name: Icebreaker's guide calls 260 g/m² and above heavyweight, and Alpinetrek lists a material thickness of 260 g/m². Icebreaker UK renamed the 260 Tech as the 260 Oasis and says the product is unchanged (the other shops still sell it as the 260 Tech).
What reviewers say (out of 10)
Ratings marked * are from reviews and are not part of the trip score. They are reviewers' scores, not our own measurements. How we score
Comfort*
Estimate: only 1 review about comfort (fewer than the 3 we need, so never above 8) 8/10How soft and comfy it feels next to your skin.
1 review on comfort, e.g. "To my surprise and delight, it is as soft as advertised.".
Odour*
Estimate: only 1 review about odour (fewer than the 3 we need, so never above 8) 8/10How fresh it stays after days of wear; higher is fresher.
1 review on odour, e.g. "No odor after 3 days of use in hot/cold/humid Alabama hunting weather.".
Drying*
Estimate: only 2 reviews about drying (fewer than the 3 we need, so never above 8) 8/10How well it wicks sweat away and dries.
2 reviews on drying, e.g. "It wicks well and even when it gets damp I still feel warm. It dries fast".
In short
Good for
- Cold-weather hill days and winter walking under a shell or insulated jacket
- Snow sports and winter hiking, the uses Icebreaker lists
- Walkers who feel the cold and want a heavyweight 100% merino crew with no zip
Strengths
- 260 g/m² fabric, in the top fabric-weight band
- 100% merino wool
- Gusseted underarms, offset shoulder seams and flatlock seams to reduce friction under rucksack straps
- Same top Icebreaker sold as the 260 Tech: it renamed it 260 Oasis and says nothing else changed
Weaknesses
- 310 g in size M, in the heaviest weight band: it adds real weight to a pack
- Heavier fabric is slower to dry and too warm for summer or hard uphill work
- No independent hands-on test of the men's cut found
- Machine wash cold on a gentle cycle; Icebreaker says do not tumble dry
Sources
We haven't tested this ourselves. Every score comes from these specs, tests and reviews.
ShowHide sources (7)
- Icebreaker UK: Men's 260 Oasis Thermal Top (long sleeve crewe, was 260 Tech): price £104.99, weight size M 310 g, 100% merino
- Nevisport: Icebreaker Mens 260 Tech Long Sleeve Crewe Base Layer Top (colours, sizes, prices and delivery)
- Alpinetrek: Icebreaker 260 Tech L/S Crewe (material thickness 260 g/m², price)
- Icebreaker: base layer guide (lightweight layers 75–175 g/m², midweight around 200 g/m², heavyweight 260 g/m² and above)
- Timrim Reviews (YouTube): review of the Icebreaker 260 Tech Long Sleeve Crewe Thermal Top, men's, after about a year of wear
- Icebreaker UK customer reviews: 260 Oasis Thermal Top, sold as the 260 Tech (513 reviews, 4.8 out of 5, 272 verified buyers, none incentivised; on the maker's own store)
- Alpinetrek customer reviews: Icebreaker 260 Tech L/S Crewe (25 reviews, 5.0 out of 5, tick-box tags)