SHOP OUR FULL PREMIUM SHERPA RANGE
"Helping adventurous souls and comfort seekers to embrace the cold."
WINNER OF SHE-COM AWARD FOR ACTIVEWEAR
What an achievement in our first year of business! Our Original Sherpa Hoodie took out first place in the Women's Activewear Category.
Did you see us at the Gatheredsa Fashion weekend?
It was great to meet so many new and existing customers face to face at our stall at the GatheredSA - Adelady Fashion Weekend. Check out their website for more fabulous SA brands.
FEATURED ON MAMAMIA - SEXY 6 with Mia Freedman
What did Mamamia Founder, Mia Freedman, think of our super-warm Thermal Theory hoodies and crews? We'll give you a hint - they were HOT HOT HOT!!!
Let customers speak for us
Recently purchased 2 pairs for my mum and I and we both LOVE them. Great for the Melbourne winter, and super comfy, soft and not too bulky. They do run small so size up, but you won’t regret these, they are incredible. No regrets at all! Thank you thermal theory, great Aussie company.
I purchased the pocket leggings and loved them so much, I immediately purchased another pair. I missed out but got the ones with no pockets. Please make them in more colours!!!! Great warmth, very high quality material that holds shape and washes well. I just wish I found them earlier in the winter season!!!
A great fit and wonderfully warm
Absolutely love them! Can’t wait for the trackies to be back in stock! Saved me from the Melbourne winter!!!
Wonderful keeps me warm in the vineyard 👍👍
Winter just warmed up with these amazing leggings! They look as good as regular leggings, but keep my legs very warm. I'm 5'10" with long legs and they sit just above my ankle which is perfect. Pocket fits my phone. Will be buying more!
Sizing was right and track pants fit well and are very warm.
These are amazing. Best leggings I’ve ever bought. True to size - I’m a size 12 and the 10-12 fit perfectly
I already have a top and track suit from thermal theory, the leggings are so incredible. I don't want to take them off, they are super comfy and warm. Highly recommend.
Btw - they run a bit small so size up
I went for an early morning walk today, it was 3 degrees. These tracksuit pants were excellent 👌🏿 perfect infact. Thank you.
Read so many excellent reviews about these and they live up to that high rating! I’m about 158cm tall and the regular leggings (opposed to the 7/8), fit well. I plan to wear them with long boots so I’m happy with the little extra coverage over ankle. They are thick and soft and super warm! Excellent customer service also prior to purchase (during my research stage).
I bought the original leggings a couple of years ago & the only downside was no pockets for phone or doggy bags while out walking, given that this winter seems to going to be extra cold I ordered ones pockets for walking, will use the previous pairs for work. Haven't worn them yet but if they are the same quality as the others I highly recommend. Nice & warm for a cold outdoors but can wear them inside without getting too warm.
Good quality, true fit and really warm!
My second pair of these super warm and stretchy leggings they’re amazing and with pockets too!
As we live in Tasmania, the winter weather can be brutal at times. This jumper fills all the requirements, is so warm and snuggly. Many thanks.
LOVE CAMPING BUT HATE BEING COLD?
There's nothing better than sitting around a campfire as the sun goes down. As it gets darker, the cold creeps in and the Thermal Theory hoodies and trackies come out.
They may look like a regular jumpers and pants but with a 12+TOG rating they are beyond expectations in comfort and warmth.
Our premium sherpa products are made from two layers of tech fabric designed to insulate your body. A heavyweight 550gsm cotton-blend outer layer, with a toasty brushed sherpa fleece lining on the inside.
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ESSENTIAL SHERPA TRACKIES
Our track pants are legendary for their warmth and quality.
