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Home / Insulated Bottles & Flasks

Insulated Bottles & Flasks

Thermos bottles that keep tea hot at camp and water cold on summer walks, in stainless steel with straw, cup or tea filter lids up to two litres.

Picking a thermos for dawn starts and hot afternoons

A thermos keeps coffee hot through a cold start at camp and water cold on a summer walk. Most of the bottles here use 316 stainless steel on the inside, and several pair it with a 201 steel outer wall. Pack one with the rest of your hiking gear and the hot drink waits for you at the lookout, not back at the car.

Hot and cold times

Hold times vary a lot, so read them on each page. One stainless model starts at 95°C and still reads 42°C after 24 hours, and the two-litre bottle keeps a drink hot for 24 to 36 hours, tested in winter at -5°C. The insulated water bottle with a straw is the short-haul pick, holding above 55°C or below 10°C for six hours. For plain water on a short walk, a lighter water bottle may do the job.

Lids, straws and cups

The lid is where these bottles differ most. The coffee model pours through a polished spout with a filter built in, under a screw cap. The travel one lets you drink through a removable straw or straight from the spout, and a lock on the lid keeps it shut in the pack. On another bottle the cap doubles as a cup for sharing a brew at the summit, and the 1 litre model has a touch screen on the cap that shows how hot the drink is before you sip. For loose-leaf tea, the two-litre insulated flask takes a long tea filter, and its handle and strap make the walk from car to camp easier.

Sizes, colours and care

Capacities run from 600 ml for a day bag up to two litres for a long day at camp, with 800 ml and 1 litre in between. Black comes on every style, green on most, and a few add pink, white, burgundy or beige. To keep the seal fresh, wash the lid by hand and leave the bottle to dry with the cap off. If you refill from creeks on longer walks, carry one of our water filter bottles for cold water and keep the thermos for tea.

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