Trek Guide
Above 4,000m laundry freezes rather than dries. Why two sets is the number, why blends beat pure merino, and why cheap merino in Thamel is a myth.
By Laxman Rawal · Aug 29, 2026
Here is the sentence that should change what you pack: above about 4,000 metres, nothing you wash will dry. Trekkers report damp laundry freezing overnight rather than drying. One washed on days one to three and gave up because things never dried and started…
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Five separate trekkers we looked at — Everest Base Camp, the Annapurna Circuit, Manaslu — landed in the same place: two tops, or two tops and two bottoms. One did EBC on a single set. Nobody who took two said they wished they had taken fewer. We should be…
Travel Himalaya Nepal · News
You will read everywhere that thermals are for evenings and sleeping, not for hiking. Below about 4,000 metres that is well supported: several trekkers describe days too warm to wear a base layer at all, pulling them on only in the teahouse at night. Above…
Travel Himalaya Nepal · News
The odour claim is real and Himalaya-specific: merino tops worn for twelve days without much smell, and one report of five weeks on a Himalayan trip still acceptable. Synthetic, by comparison, is often unpleasant after a day. But there is a genuine dissent…
Travel Himalaya Nepal · News
Best overall
Icebreaker Merino 200 Oasis Long Sleeve Crew
Merino at 200-weight is the one true trekking base layer — warm damp, warm dry, and it does not smell; it is also three times the price of synthetic and it will eventually hole at the…
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Merino at 200-weight is the one true trekking base layer — warm damp, warm dry, and it does not smell; it is also three times the price of synthetic and it will eventually hole at the shoulder where the pack rubs.
Not for: A four-day trek where you can wash and change. Synthetic is cheaper, tougher and dries faster; merino earns its price on long trips without laundry.
Check price on Amazon Read the full reviewIf you buy through that link we earn a commission. It costs you nothing and it does not change what we recommend — the rental and advice-only entries in our gear guide earn us nothing at all.
This is the finding we least expected. On the hillwalking forums where people wear this stuff to destruction, the brands most often reported failing are the premium ones — Icebreaker and Smartwool tops full of holes, one pair of Icebreaker long johns not…
Travel Himalaya Nepal · News
About the links below. Some go to Amazon, and as an Amazon Associate we earn from qualifying purchases — at no extra cost to you. It changes nothing about the advice: we tell people to rent down jackets and sleeping bags in Thamel rather than buy them, and we…
Travel Himalaya Nepal · News
Best sleeping layer
Smartwool Classic Thermal Merino Base Layer Bottom
The single best sleep-warmth upgrade above 4,000 m and it doubles under trousers on a cold pass; at 250-weight it is too warm to walk in on any ordinary day.
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The single best sleep-warmth upgrade above 4,000 m and it doubles under trousers on a cold pass; at 250-weight it is too warm to walk in on any ordinary day.
Not for: Low-altitude treks. Below 3,000 m you will never take them out of the bag.
Check price on Amazon Read the full reviewIf you buy through that link we earn a commission. It costs you nothing and it does not change what we recommend — the rental and advice-only entries in our gear guide earn us nothing at all.
Everest and Annapurna were untouched by the 2026 floods and are running normally. Tell us your route and we will send the real list — including what to leave at home. Everest Base Camp — 14 days · from US$1,650 per person Annapurna Base Camp — 7 days…
Travel Himalaya Nepal · News
You will be told you can pick up cheap merino in Kathmandu. We went looking for a single first-hand account of someone doing that, and there isn't one. What the reports actually say: the cheap thermals in Thamel are unbranded synthetic, and the genuine merino…
Travel Himalaya Nepal · News
Best synthetic
Under Armour Tech 2.0 Long-Sleeve
Dries in an hour and costs a fraction of merino, which makes it the better buy on a short trek — it will smell by day three and nothing you do changes that.
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Dries in an hour and costs a fraction of merino, which makes it the better buy on a short trek — it will smell by day three and nothing you do changes that.
Not for: A fortnight without laundry. That is exactly the case merino is for.
Check price on Amazon Read the full reviewIf you buy through that link we earn a commission. It costs you nothing and it does not change what we recommend — the rental and advice-only entries in our gear guide earn us nothing at all.
You will read that a sweat-soaked base layer at altitude can chill you dangerously once you stop moving. That is physiologically sound and every experienced walker repeats it. We should be straight, though: we could not find a first-hand Nepal account of it…
Travel Himalaya Nepal · News
Trekking somewhere specific and unsure what the weather actually does there? Ask us — we walk these trails every season.
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