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Advnture
Advnture
Sian Lewis

Columbia Mount Si Down Waterproof Parka review: like a stylish, wearable duvet

Columbia Mount Si Down Waterproof Parka

Columbia Mount Si Down Waterproof Parka: first impressions 

While it’s tempting to hibernate indoors when the mercury drops, a coat like the Columbia Mount Si Down Waterproof Parka (available direct from Columbia) could tempt you to emerge. The chillier months can be a rewarding time to get out and about – and the best down jackets make the experience even more of a pleasure.

Specifications

• List price: $350 (US) / £345 (UK)
• Waterproof: Omni-Tech
• Sizes: XS–XXL
• Colors: Khaki / Beige / Black
• Filling: 650 fill duck down
• Compatibility: A super-warm parka ideal for the coldest temperatures

When you’re working out or working up a sweat, lightweight and breathable waterproof jackets are your best bet, but when you’re moving more slowly – on a more relaxed walk, checking out the night sky, on the school run, watching sport outdoors, taking the dog out or just heading to really cold climates to see the sights on a winter holiday – a proper thick-and-padded, longer-length coat is a must.

With a good amount of RDS-certified duck down fill, some funky tech employed on the inside and a bit of extra length to protect your posterior and keep the cold from creeping up from below, the Columbia Mount Si Down Waterproof Parka seems well specced for exactly these times. I took it to the Alps to see if it measured up enough join our guide to the best women’s down and puffer jackets currently available.

Columbia Mount Si Down Waterproof Parka: on the hills

The faux fur is removable, if such fluffy flourishes are not your thing (Image credit: Sian Lewis)

On test in the snow-covered mountains, the Columbia Mount Si Down Waterproof Parka proved to be just as warm and cozy as it looked from the get-go. This coat packs a technical double whammy – it’s stuffed with a generous 650 fill power of RDS (Responsible Down Standard) -certified duck down, which instantly traps in heat without adding bulk or weight. Plus it’s lined with Columbia’s trusty Omni-Heat lining, which employs gold-hued metallic dots to reflect body heat. 

On test I found this dream team of materials did trap in heat. The Mount Si offered welcome warmth from the second I shrugged it on, and this thermal protection lasted all day – even when I wandering about in the snowy Alps in -5°C.

The coat features Columbia’s trusty Omni-Heat lining, which employs gold-hued metallic dots to reflect body heat (Image credit: Sian Lewis)

This parka is truly winter-weather ready – it blocks wind and it repels rain and snowfall thanks to Columbia’s own-brand Omni-Tech waterproofing, backed up by the sealed seams. None of this means much if a coat isn’t comfy to wear all day long, but the Mount Si ticks boxes there too: it’s roomy but doesn’t let air circulate (the drawstring waist helps) and can be worn over a mid layer if conditions are really Baltic.

It is primarily a winter coat, but it will also come in very useful on frosty spring mornings and clear cold evenings. Don’t expect much breathability, though, because you will be disappointed on that front. If you get too hot, you just have to undo it a bit.

Looks wise, the parka appears far more casual and less techie than it actually is, and it is definitely smart enough to wear for work and relaxed enough for casual wear in the city. The hood fits well, and the faux fur is removable, if such fluffy flourishes are not your thing. I can’t really find any niggles to flag here, except that I prefer zipped pockets to poppered ones, and that the pockets aren’t in a natural place to warm up your hands.

Sealed seams help retain heat inside the coat (Image credit: Sian Lewis)
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