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Snow Clothing Insulation – Your Questions Answered

Your Guide to Insulated Snow Gear

Staying warm on the hill is the key to making every day your best day. The snow sports we love take place in some of nature’s most brutal environments, freezing cold temperatures often coupled with wind, rain and ice. If you ask me, we all deserve a pat on the back for even giving it a go!

There are so many options out there for snow insulators these days. How are you supposed to know which is the right fit for you?

Never fear, generations of skiers and snowboarders have done the hard yards, so you don’t have to. Options to keep us warm and cosy in crazy conditions have been endlessly tried and tested, leaving us with an abundance of options at our fingertips, and luckily for you, we here at Auski love nothing more than sharing our experience with you.

“The overriding principle at work in all types of insulation is the same; small pockets of air get trapped in the small spaces in either down or polyester, they warm up, and provide warmth in cold conditions.”

Here are the answers to some of our most frequently asked insulation questions;

Q: What’s the difference between down and synthetic insulation?

A: Put simply, down insulation comes from birds and synthetic insulation is usually made from polyester.


Down is rated on a spectrum of ‘fill power’ – this rating is measured by how many cubic inches one ounce of down can fill. The typical range is around 450 to 900, with 900 being the warmest and lightest… but also the priciest.


  • Ultra-lightweight
  • Super compressible
  • Durable
  • A little bit goes a long way – thicker doesn’t always mean warmer
  • Natural


  • May retain moisture when wet
  • Not vegan
  • More expensive



  • Vegan
  • Retains warmth when wet
  • Less expensive
  • Faster drying
  • Hypoallergenic


  • Heavier
  • Less compressible
  • Lower weight to warmth ratio

For those who get hot and sweaty on a day out, or who are riding in wet and humid conditions, synthetic insulation’s quick-drying power and its ability to retain warmth when wet make it a top contender!

Q: How much insulation do I actually need?

A: We get asked this a lot, and it’s a very difficult question to answer due to the subjectivity of people’s different needs.

A good rule of thumb is:

Warmer conditions: 50-100gsm

Colder conditions: 100-200gsm

(gsm: grams of insulation per square metre, you may see this measurement on the tags of jackets and pants)

Choosing a jacket with less insulation gives you the option to add more layers and in turn, make the jacket more versatile for a range of differing conditions. However, choosing a jacket with more insulation means you’re covered for the very cold days and don’t need to add layer upon layer to stay warm.

Realistically, this is all about personal preference, how cold you get and what style you prefer.

Q: The bigger the jacket, the warmer it is, right?

A: Wrong.

Ensure your jacket fits properly allowing for an appropriate amount of layering. We always recommend trying your jacket on with the layers you’ll be wearing upon making your choice.

Choosing a larger jacket will give you the option to add more layers but add size very carefully. A big jacket will also negate the effect of trapped air creating warmth. If there’s too much room in there, air will escape and quickly make you cold. You can read more about how to layer clothing for the snow here.

Q: What about shells?

A: Shells are a great option for versatility. Many people choose to combine a shell with a thin down puffy to ultimately create an insulated jacket. This can mean you have three jackets, a puffy for après, a shell for warmer days and an insulated jacket for when the temperatures really drop.

Whilst this option is popular, it is more expensive as you’re buying more than one jacket. For our Australian conditions, insulated jackets with high levels of waterproofing are our most popular sellers.

Check our out complete guide to waterproofing ratings of snow jacketsblog to complete your jacket knowledge.

If you have any insulation questions, send us an email or get in touch with us on Facebook or Instagram (@auskiaustralia)!

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