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Altitude Tee - Run All The Trails Original

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Colour
Charcoal Marle
Size

Our Altitude range is designed to fit close to your body for maximum performance, so it’s tight but still soft, with plenty of give for extra comfort. Designed for our trail runners, one of our best performance layers just got a makeover! The Men's Altitude Base Layer ‘Run all the Trails’ Tee is the perfect addition to any outdoor lover’s wardrobe. It’s super lightweight, breathable yet incredibly warm. This T-shirt is ready to keep you warm, comfortable and protected from the elements during all of your trail adventures, no matter how big or small they might be.

The Altitude Base Layer Tee takes you through a wide range of temperatures and conditions; the high round neck offers extra protection, and the sleek, tapered fit is designed to suit all levels of activity. Wear this Base Layer T-shirt with extra layers for extra warmth when the weather hits hard, and when the temperature rises, you’ve got the perfect lightweight and breathable T-shirt.

You can always size up if you want a little more room, but it’s definitely designed to fit close to your body. (For a more relaxed fit try our Ultra or Universal T-shirts.)

Tag free, flatlock stitching, raglan sleeves eliminate chafe and maximize comfort. 

Why you’d buy this: You like your stuff to fit nice and close to your body whether you wear it on its own, or under another layer and don’t want any extra bulk or bunching. You might also want a bit of extra length which this one gives you. It’s super soft and comfy, and 96% merino so it’s 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.

DESIGN SERIES

Our Altitude Design Series are produced in smaller, limited quantities and may take a few extra days to produce so please allow for this in your delivery time. If you have ordered one of these along with a standard item, your order won't be sent until your Design Series tee is ready. We will continue to have various artworks produced so check back from time to time or sign up to our Outsiders Club to see new designs as they are released.
To order a plain version of this tee, or view other styles check out our Altitude range here

Designed to be worn as a body tight ‘contact fit’ layer. 

New improved fit. Regular body length, shorter and looser than the Altitude long sleeve styles.

Model wears a size medium.
Model specs - height 179cm, chest 91.5cm, waist 81cm, hips 88.3cm.

Size Guide. Contact Fit.

Running

170gsm lightweight

96% superfine Australian Merino

4% Elastane - for an easy all-way stretch.

A MicroMerino® Fabric.

BENEFITS OF MERINO

LIGHTWEIGHT

THERMO REGULATING

SUPER SOFT & COMFORTABLE

BREATHABLE

MOISTURE WICKING

ODOUR RESISTANT

NATURAL

ETHICALLY MADE

Customer Reviews

Based on 33 reviews
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(33)
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B
B (Sydney, AU)
Great base layers

One of many excellent ioMerino products I've purchased and will continue to do so. These are among the best base layers.

S
S.P.

Amazing

M
Mark Daley (Breckenridge, US)
Summer T-Shirt

To get the right fit I sized up, and it is now part of the summer t-shirts

A
Andrew Jarvis (Perth, AU)
Quality Product

Very happy with this purchase. Fits well. Well made. And does it’s job. Keeping me warm.

C
Cass
Altitude Tee

I'm really happy with my Altitude Tee. It fits exactly as described and pictured. It IS a clingy item, but doesn't feel tight. I wear it for cooler weather personal training, and the Altitude Tank for warmer weather training. For the purpose, I appreciate the extra length of the Altitude range. The colour (green) suits my preference, and I'd like to see this colour as an option on more products! Like my other IO products, the feel of the merino wool is pleasant. It feels like a 'quality' item. The delivery was prompt, and I appreciated the discount that was available at the time. And best of all, the IO people are great to deal with!

J
JL (Sydney, AU)
Consistent Quality

I live in these clothes, love merino wool!

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