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Celsius Tee

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Colour
Blush
Black
Dusty Navy
Light Grey Marle
Size

We know what you’re thinking: how will a merino Tshirt keep me cool when it’s warm? Well, we’ll tell you! We’ve blended our softest, finest merino, together with a special blend of plant fibre, to come up with a fabric that will keep your core comfortable and cooler for longer when the temperature rises.

The Celsius Tee is part of our Summerino range, and it features our coolest ever fabric, that is naturally breathable, temperature regulating, moisture wicking and odour resistant - and feels ridiculously good next to your skin.

It’s designed to be worn in milder to warm weather, but really the easy fit delivers performance and comfort all year round. Whether you’re pushing hard, doing not much at all, or something in between, go with the io Women's Celsius Tee to feel good no matter how warm it gets outside.

The Celsius Tee has a versatile and relaxed fit, with a drop back hem for extra coverage.

Pair with a Zodiac Crop Top to maximize comfort, style and MicroMerino® performance.

Why you’d buy this: You want something extra lightweight for warmer weather, or you’re more prone to overheating even in cool weather and want the lightest merino thing you can get your hands on. And you want something natural. This one blends merino with plant fibre so it’s still super natural which means almost no microplastic issues when you wash it or landfill when you’ve finished with it.

As with all our clothes, the merino delivers natural temperature regulation, breathability, moisture wicking and odour resistance.

Designed to have a casual, relaxed fit. True to size.

Model wears size small in Black.
Model specs - height 167cm, chest 78cm, waist 63cm, hips 81cm.

Model is 5'8" and wears size small in Dusty Navy, Blush, and Light Grey Marle.

Size Guide. Casual Fit.

Warm Weather 

Hiking

Running 

Yoga

Extra lightweight 150gsm

45% Australian Merino Wool

45% Tencel

10% Nylon

BENEFITS OF MERINO

LIGHTWEIGHT

THERMO REGULATING

SUPER SOFT & COMFORTABLE

BREATHABLE

MOISTURE WICKING

ODOUR RESISTANT

NATURAL

ETHICALLY MADE

Customer Reviews

Based on 9 reviews
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Anonymous (Sydney, AU)
Great t shirt

I am quite fussy about t shits and am loving my new celcius t. It's comfy and stylish and goes with lot of different outfits. And merino!

S
Sharon (Adelaide, AU)
Awesome for summer

So glad I bought the Celsius t-shirt! It's awesome! So light and cool feeling. Perfect for the very hot days of summer. I bought my usual size and the fit is perfect. (I size up for the Altitude range.) Thanks io!

H
Helen Clark My new tops (Thomastown, AU)

Love the tops I purchased cool and comfortable have worn them to gym and bike ride

J
June Ward (Melbourne, AU)

Great product. And it’s Australian & it’s pure wool!!

H
Hayley (Perth, AU)
Cool, soft & comfy

Appropriate for casual, work or play. These t-shirts are cool, soft & comfortable for every occasion.

D
Deborah Bisley (Highfields, AU)
Awesome

Can't believe how quickly this arrived. It is so comfy and fits perfectly. I'm a 16 and the 14-16 is still loose fitting on me so doesn't show off my bumps.

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