Primus Klunken Thermos | Review - Outdoors Magic

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Primus Klunken Thermos | Review

Primus's new range of sleek and durable double-walled flasks

Why We Chose The Primus Klunken Thermos: Cool colour options, old-school cork top, wide mouth

The Primus Klunken is sized and coloured in collaboration with Fjällräven’s Kånken backpack though it should suit any bag you might already have.

It’s a streamlined and sleek bottle, designed for grip and functionality with a double-walled food-grade stainless steel making it insulating, incredibly robust, safe-to-use, and well-suited to an outdoor lifestyle.

Design

The flask comes in 0.5 and 0.7 litre options, has a diameter of 6.5 cm, and a consistent height of 21.5cm. This makes it big enough to be useful for a few miles on the trail, whilst also suitable for day-to-day life. 

It’s vacuum-insulated with a double-wall design that’ll keep your drinks hot or cold. The opening is also fairly wide so can accommodate easy cleaning, swift re-filling, as well as sizable ice cubes.

The slick colour options are perhaps what draw your eyes most immediately to this flask. They range from a classic stainless-steel colour to a powder-coated frost, black, ox red, yellow, green, mint, and pink. This powder-coating additionally make it easier to grip the bottle, even with wet hands. 

Materials

The Primus Klunken is made from a 18/8 stainless steel that doesn’t retain or transfer flavours, regardless of the beverage.

 “A streamlined and sleek bottle, with grippy technologies and a high functionality.”

The screw top is made with a cork centre, a Kånken webbing, and a steel rim, creating a cool, old-school aesthetic whilst retaining modern toughness.

Photo: Chris Johnson

Tester’s Verdict

Will Renwick, editor of Outdoors Magic

“This is a useful insulated flask that has some nice design touches.”

“I think what I like most about it is that it’s a nice convenient size for those smaller hikes where you don’t necessarily need loads of water/coffee/tea and also don’t want to have to lug a big flask along with you. Hydro Flask’s standard flask, for instance, would be overkill on a morning walk in the countryside whereas you can simply slip this into your jacket pocket or into a small pag. Another big bonus is that it’ll fit inside the cup holder in my car – my standard Hydro Flask won’t.

“I’ve found the insulation works well for, say, any hikes of up to 7 or 8 miles, but it doesn’t quite stretch to a full day out though. Still, with the fairly small 0.5 or 0.7-litre capacity,  I wouldn’t be taking this flask out for a full day anyway.”

Photo: Chris Johnson

Primus Klunken Thermos

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