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What To Wear In 'In-Between' Weather

April 28, 2023 2 min read

Man running in the outdoors wearing arm warmers

If you want to stay comfortable for longer when it’s somewhere in between hot and cold, or possibly goes from one to the other and maybe even back again, we’ve got the perfect ‘in between’ suggestions for you to go with.

When you know it’s going to be warm from start to finish, go with Celsius - our lightest, most breathable fabric ever. It’s the flagship range in our Summerino Collection. Super soft and smooth, but also super cool and odour-resistant.

GO WITH OUR COMFORTABLE CELSIUS RANGE

We know what you’re probably thinking, “They’re just T-shirts!”. But nope, they’re merino T-shirts and there’s a difference. A big difference. Unlike Stinky Synthetics or Killer Cotton, when you go with an ioMerino T-shirt you get the ultimate in core temperature regulation. When it’s cold, they’ll keep your core warm, and if it warms up, they’ll breathe and help you stay comfortable for longer.

GO WITH HIGH PERFORMANCE MERINO T-SHIRTS

Not sure whether to wear a T-shirt or long sleeve top? Go with our Newton Arm Warmers. They’re 76% super fine Australian Merino so don’t just give you the versatility of a 'removable sleeve', they give you all the high performance benefits of Merino: natural, temperature regulating, breathable, comfortable and odour-resistant.

GO WITH ULTRA COMFORTABLE NEWTON ARM WARMERS

We do regular crew tops, but if you’re really looking for a bit of extra versatility, go with the zip. You might not think it would make all that much difference, but the higher collar delivers a lot of extra warmth in cold weather and stops cool air sneaking in. And if it warms up, dropping the zip really let’s you catch some extra air over and above the natural breathability of the natural merino fabric. So zip up/sleeves down when it’s cool, and zip down/sleeves up when it’s warm and you’re good to go!

GO WITH LIGHTWEIGHT & COMFORTABLE LONG SLEEVE TOPS

And let’s not forget a few optional extras that can make a real difference. Soft, temperature regulating, moisture wicking, breathable undies that keep some of your most important bits comfortable, a neck warmer to keep your neck/head/ears warm is pretty much a must-have accessory, and our lightweight gloves to keep your pinkies warm but are small and light enough to stash if you need to take them off.

CHECK OUT ALL OUR ACCESSORIES

Let customers speak for us

from 1627 reviews

Great t-shirt for thru-hikers

I have been wearing my ioMerino t-shirt everyday for over 70 days on the Appalachian Trail thru-hike. It still looks and feels like new. I absolutely love it. It’s great fit, washes very well, doesn’t hold the hiker smell 😊, holds its shape even when wet, fast drying and most importantly super comfortable for any type of weather. Highly recommend. I might get the sleeveless shirt for the summer period as a second shirt.

H.P.

05/28/2023

ioMerino

Universal Long Sleeve Tee - Wise Women Walking

I love my universal long sleeve tee. I have worn it on numerous long hikes and have found it to be fast drying if caught in light drizzle or when sweaty. On a cool day it is fine on its own, or under other clothes if cold. Perfect for when the weather is warmer too, plus protects arms from the sun. I love the dazzling blue colour too.

Cherie

05/23/2023

Universal Long Sleeve - Wise Women Walking

Great products

I’ve been wearing ioMerino since their launch and used to work in the wool apparel industry. Fantastic company and product- I still have base layers from 2008 that have worn incredibly… great ti see them evolving and improving. The performance aspect is excellent.

Ben Lyons

05/17/2023

Altitude 'Mongrel'

My new favorite sports bra

I am between sizes so went with the larger size and the fit is perfect. Very comfortable!

Amanda Lavallee

05/16/2023

Altitude Crop - Ready For Adventure

Perfect Trackpants

Have just ordered another pair in a different colour. These have fast become my favourite trackpants. I've worn these walking my dogs and they're warm but the fabric is so soft, light and breathable! Well done IOMerino! Awesome. I seriously don't want to take them off and they're stylish enough to wear out. Keen to try them on my next hike that's how much I love them!

Tania Dunne

05/13/2023

Stride Tracksuit Pants

Lightweight warmth

This is fantastic for cold weather running. The zip is so handy for adjusting the warmth as I warm up. The neckline is cosy when starting out. I team this with an IO tank top and it works perfectly on a 1 degree morning!

Fiona B.

05/11/2023

Ultra Zip

Love this top!

The fabric in this singlet is incredibly soft. I like the cut too - good coverage (neckline, chest and length) if it’s cold but not too much. Highly recommend.

Fiona B.

05/11/2023

Ultra Tank

Ultra Happy

I have found the Ultra Trunks to be very soft, supportive and comfy. The sizing is accurate. Perfect for my bushwalks. I just about live in merino.

Philip Pascoe

05/08/2023

Ultra Trunks

Altitude Full Brief

Very light & comfy for a curvy body. Soft & not itchy. Don’t ride up when walking.

Hayley

05/03/2023

Altitude Full Briefs

Perfect for a winter music festival

I purchased my grey beanie to take to Mt Gambier for Generations in Jazz. It is going to be perfect for the chilly weather. Thanks friends at IO.

Jenni Watkins

05/03/2023

Ribbed Beanie

Pretty much perfect

I've had a few ultra shirts, and loved them. These are less fitted, and are better every day shirts. I don't really see any reason to buy a different shirt ever again.

Duncan

04/25/2023

Universal Tee

Perfect pants.

I usually buy another brand but thought I would give IoNerino a go. I certainly don't regret my decision. Perfect fit, perfect feel and quality. Will be buying another soon.

Charles Farrugia

04/22/2023

Glacier Tracksuit Pants

Neck Warmer

Works so well and keeps my old neck very warm

Jane Heyndyk

04/17/2023

Neck Warmer - TRSA Five Peaks 2023

New Favourite Top

Love, love it

Jane Heyndyk

04/17/2023