Unisex Merino Thermal Bottoms
Front shot of Ottie Merino unisex thermal bottoms in Charcoal Marle colour
Close up shot of the pocket of Ottie Merino wool unisex thermals that can fit a mobile phone
Front shot of Ottie Merino unisex thermal bottoms in Charcoal Marle colour
close up shot of the Ottie Merino wool thermal fabric in Charcoal Marle colour
Unisex Merino Thermal Bottoms

Unisex Merino Thermal Bottoms

Regular price $90.00 Sale price$50.00 Save 44%
  • $10 flat rate shipping - Australia & NZ-wide. FREE for orders over $125.
  • 30 day no fuss returns - contact us and we'll sort you out.
  • Ethically made in Melbourne. Aussie owned and operated too.



Our new Unisex Merino Thermal Bottoms are made from a stretchy Australian merino and elastane blend. Weighing in at 200gsm, these thermal leggings are ideal for most chilly conditions you're likely to be presented with in Australia and New Zealand. 

Ethically made in Australia, our merino thermal bottoms incorporate a beautifully soft Ottie Merino-branded waistband, and a couple of external sewns pockets—so you don't get that annoying pocket bunch-up against your legs—because pants without pockets suck! At 200gsm, we're talkin' a great 'allrounder' thermal bottom. 

Paired with a men's or women's merino thermal top, these merino thermals pants are a must for the well-prepared and cool weather hiker or skier. 

- Australian merino and elastane blend—the best of ALL worlds in terms of performance, comfort, and durability (95% merino, 5% elastane)
- Pockets to keep them hands warm, or for handily stowing your phone, headlamp, or matches at camp or the hut
- Available in small to xx/large (see size chart)
- 100% mulesing-free 
- Sweatshop-free! 
- Made in Melbourne
Australian Made certified
- All the benefits of merino wool—odour resistant, moisture wicking, temperature regulating, super soft, biodegradable, and comfortable AF!
- Designed by hikers, for hikers (and and skiers and snowboarders and people who get cold!) 

You may notice a bit of colour variation from the pics here. See colour swatch to get a better idea for the colour. We'll be getting some better product photography real soon. Including an awesome snowy winter shoot. 

We charge a flat shipping rate of $10 Australia and New Zealand-wide. Spend over $125, get FREE shipping. Upgrade to express for $15.

Order for in-stock products are dispatched within 1-2 business days. (Note: Between April 4-10 we're closed and will be off hiking in NZ. Orders placed after 3pm on 3 April will be shipped when we get back.)

Standard shipping will take 3-7 business days from dispatch. If you upgrade to express expect your order in 1-3 business days. Depends on how far out in the stocks you are.

International orders are charged a $20 flat rate and will take 2-3 weeks.

Buy the wrong size? Change your mind? No worries at all.

Any dramas with your order, flick us an email and we'll sort it out. If you selected the wrong size or changed your mind we'll usually ask that you cover return shipping to us and that it arrives back in sellable condition. We'll then provide an exchange, credit, or refund—your choice.

Customer Reviews

Based on 28 reviews
Bernadette Madden
Fit: Runs Small
Activity: Hiking

Very comfortable and warm - good style for leggings. Liked the pockets!
The measurement guide made it much easier to pick the right size. And I will use for more than hiking

Jack OConnell
Fit: Runs True to Size
Activity: Hiking
So far so good!

They arrived today! Slipped them on and they felt like high quality. Much thicker than my macpac thermals and they come with pockets. The cut was a little strange and different to my other branded pairs but I'm thinking they will shape to my body as they age. I will recommend these!

sally Johnson
Fit: Runs True to Size
Activity: Every Day Wear
Fantastic Quality

I am very happy with these thermal pants. Amazing quality and very comfortable. Arrived quickly too.

julie woolnough
Fit: Runs Small
Activity: Hiking

Quality product … great customer service

Fit: Runs True to Size
Activity: Hiking
Thermal pants

Perfect. Just remember when you carefully measure your undies as instructed, that Ottie is looking for a waist measurement. When my longs arrived they were bigger than expected but the exchange process was smooth and quick and the replacement longs are spot on. Couldn't ask for better customer service.

Margaret J Mason
Fit: Runs Small
Activity: Travel
Cosy& comfortable to wear as under layer for a throw over or hiking top.

This product is well made. I will be warm when hiking or travelling. The merino is so soft & light weight for backpack.

Fit: Runs True to Size
Activity: Every Day Wear
Unisex thermal bottoms

Sizing is accurate when taking on board the advice to go up one or two sizes. It's a strange cut: having a female body, I found there was too much excess fabric at the front which made for a bulky fit at the front. The seams were pretty scratchy and uncomfortable (this might just be due to having sensitive skin), but okay when I decided to try wearing the thermal bottoms inside-out. The length was perfect, although I could see how they might end up too short for others. Overall, the cut and sizing don't really work for the unisex aspect and I can see why the thermals are being clearanced.
Can't fault the customer service of Ottie Merino, and would definitely try out future thermals that had a better gender-specific cut.

Judy Purcell
Fit: Runs True to Size
Activity: Every Day Wear

The thermals are warm and comfortable- what more do you want in a thermal.

Fit: Runs Small
Activity: Hiking
Super warm thermals

I’ve just used the thermal pants and long sleeve top as my camp clothes and sleepwear on the Heysen, brilliantly warm all night and love that the top is long!

Jess Hill
Fit: Runs True to Size
Activity: Hiking
Highly recommended

Really great to support an Australian-made business. I particularly like the colour range, fit, and higher necklines that the women's tees offer.

Merino Thermals FAQs

In thermals, you need stretch. This is so they sit nice and close to the skin and provide the best insulative qualities. Pure merino is stretchy but not quite enough. Our Australian merino/elastane blend gives you softness, stretchiness, as well as all the benefits of merino.

Why not?

You don't know you're missing a pocket until you need one. You're at Clinton Hut on the Milford Track or at a campsite on the Larapinta Track. Just in your thermal clobber—we hikers/trampers are all about high-fashion, after all—and you've nowhere to pop your headlamp or phone or pack of matches. Nice for warming the hands too.

Same as with t-shirts. 30 days. No fuss. We're happy to do size and change of mind exchanges or credits or refunds. They just need to come back to us in pristine, resellable condition. Email support@ottie.com.au before returning any items though so we can walk you through the process.

Oh, and with the bottoms, make sure you try them on with your undies on.

If you place an order now and choose to cancel the order before the thermals arrive that's perfectly fine. A credit or exchange or full refund is available - your choice.

Ah, the logistics of manufacturing clothing.

The charcoal marle these will be produced in are a 'custom colour' with our manufacturer. We sampled in black as we developed the product. So we had to get a bit creative in Photoshop for the initial product photos, just until we get out batch of photography samples and we do a full photoshoot. Hopefully in Kosciuszko National Park which'll be a stunning backdrop!

Around 35gsm in weight for a start. Our lightweight 100% merino tee is 165gsm and our thermals are 200gsm. Perfect for cooler conditions. And, our thermals are a merino/elastane blend, which lends itself a bit better to 'baselayer' wear.


Not only are we Australian Made certified, we're Ethical Clothing Australia accredited.

When you choose Ottie Merino you're choosing to support local manufacturing and a supply chain when workers are paid properly and are treated well.


Our superfine merino wool is traceable and mulesing-free. Our merino fabric is knitted and dyed in Melbourne. And, importantly, it's comfy AF.

Our supply chain is RWS accredited.

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