Premium Sherpa Collection
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Adult Sherpa Hoodie
SHOP HOODIES -
Adult Sherpa Crew Neck
SHOP CREW NECKS -
Adult Sherpa Hoodie - BRIGHTS
SHOP HOODIES -
Adult Sherpa Crew Neck - BRIGHTS
SHOP CREW NECKS -
Adult Sherpa Trackpants
SHOP TRACKIES -
Kids Sherpa Hoodies
SHOP KIDS HOODIES -
Adult Quarter Zip Sweaters
SHOP QUARTER ZIPS -
Home Socks
SHOP SOCKS
Let customers speak for us
from 15 reviewsIncredibly soft and comfy hoodie. Amazing quality and well made. Highly recommend

I live in the Barossa and it gets COLD in winter. I’ve had my trackies for a week and they have been divine. I’m 181cm and 80kgs. The medium fits me well.

I absolutely love my hoodie and trackies . Where do I start to sing the praises of these two lovely garments ? I generally run very hot and I live in Qld so when I made this purchase I honestly thought I would wear it once or twice a year but I love them both and it’s almost impossible to get them off me . I was bold and bought the pink hoodie and the colour is perfect for me . I have the black trackies and they are the most comfortable fit with a slim line leg and they actually look stylish . I thought I might be too hot in both pieces at once but I don’t know if it’s the Sherpa lining but the fabric seems perfectly regulated and I just feel incredibly snuggly and warm when I wear them . I am a massive fan and cannot praise my pieces enough .. Super keen to buy more for my family now

Loving my new top and pants, they are stylish, warm and toasty…. Would definitely recommend!

My package arrived today, not even a week since Mia showed your amazing garments on the Sexy Six. I got a top and pants and I'm so warm. I absolutely love your products. Thank you thank you thank you!

Just received my order. XS fit perfectly. Love them. Great quality product.

Bought my kids and I jumpers and we all absolutely love them. They are so soft and warm , highly recommend

We love our hoodies and the personal service we received, including personal consideration for sizing. Terrific product, customer care and you just do not get that mainstream shops these days.

This winter has been nasty, but I've stayed so much warmer with this hoodie. Highly recommend

Really happy with the ultramarine blue. I have 4 Thermal Theory hoodies now, is that a problem? ;)

Pretty cold winter in the hills!!! These are lovely, soft and warm. Perfect for keeping warm watching kid sport!

I didn't understand what the big deal was until I held one in my hands and felt how much better they were. Now it's pretty much all I wear. Had to buy a few more colours to switch it up!

So happy with my recent purchase from Thermal Theory! This is, without a doubt, the most comfortable thing I've ever worn, What is EVEN better, is that I can walk outside my door, go shopping, catch up with someone for coffee, and NOT have to get changed. It's the socially acceptable Oodie! The inside of this jumper is literally like wearing a cloud. Do yourself a favour, support a local Aussie business and get yourself one too!

The warmest top I have ever owned. Like being wrapped up in cotton wool. Comforting. Beautifully made and I feel good in it. Looking now at the rest of the range

I’m so happy with my new Thermal Theory Hoodie! It’s easily the warmest item of clothing I own - I can highly recommend it for those cold wintery days. The sizing is generous, so select your regular size for an oversized fit, or size down for a more fitted style.



Our Story - The cold weather shouldn't stop you doing the things you love.
Thermal Theory started with a search for everyday clothing options that offered core warmth and wind protection without looking like they were designed for a polar expedition.
Thermal Theory is based in regional South Australia. We live between two amazing locations; the unique environment of Kangaroo Island and the beautiful Adelaide Hills.
We've developed a clothing range that can take you from the couch, to the beach, to hiking in the hills; all while maximising comfort and warmth.
Our unique dual layer fabric offers a thick outer shell for wind protection and a super soft brushed sherpa inner core for ultimate comfort.