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Travel Himalaya Nepal
Water & Health

Bottles & Bladders

Bladders freeze; bottles you can put in your bag.

About the links on this page.Some go to Amazon, and as an Amazon Associate we earn from qualifying purchases — at no extra cost to you. It does not change what we recommend: every card here also says who the item is not for, and a few things we think you should simply rent in Kathmandu or Pokhara instead, which earns us nothing.

Nalgene Wide Mouth 1 L — Also a hot water bottle in your sleeping bag
Best overall

Also a hot water bottle in your sleeping bag

Nalgene Wide Mouth 1 L

1 L, wide mouth, boiling-water safe

Fill it with boiling water at dinner and it is a hot water bottle all night, then drinking water in the morning — that second job is why we recommend hard plastic over any soft flask above 4,000 m.

Takes boiling water, which soft flasks do not

Wide mouth does not freeze shut as fast

Graduations let you measure rehydration honestly

Heavy empty

Rigid, so it takes space whether full or not

Lid leash snaps eventually

Not for you if: Nobody on a cold trek. The hot-water-bottle trick alone justifies it.

Check price on Amazon
Hydro Flask Wide Mouth Insulated — Water that has not frozen by the passBest insulated

Water that has not frozen by the pass

Hydro Flask Wide Mouth Insulated

On a −15 °C morning an insulated bottle is the difference between drinking and chipping ice; the weight penalty is real, and one of these plus a Nalgene is 700 g of bottles.

Check price on Amazon