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Altitude Tee

Fabric Guide Size Guide

Men's Size Chart

Click here to learn more about our different fits and how to choose the size that's right for you.

We strive to make all our products true to size. The sizing chart below is not garment specific, but hopefully, it will give you some guidance when choosing your size. In instances where you’re perhaps in between two sizes try choosing the smaller size.

For further assistance with sizing, contact us here.

 

 Men's General Size Chart

 

 

XS

S

M

L

XL

XXL

Waist

Inch

27

28-30

32-34

36-38

40-42

44-46+

 

cm

68 - 70

71-76 

81-86

91-96

101-108

111-116+

Chest

Inch

32-34

34-36

38-40

42-44

46-48

50+

 

cm

81.5 - 86

86-91

96-101

106-111

116-121

127+

 

Tracksuit Pants 

Outside Leg measurement (including waist band).

Model height 6'2 , wearing a size medium. 

S M L XL XXL
Inside Leg inch 29 30  30.5 31 31.5
cm 74.5 76 77 78.5 80
Outside Leg inch 41 41.5 42 42.5 43
cm 105 106 107.5 109 110

 

Merino-Compression Leggings

Model height 6'3 , wearing a size large. 

XS S M L XL XXL
Inside Leg  inch 25.4 26.4 27.4  28.3 29.3 30.3
cm 64.5 67 69.5 72 74.5 77

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Khaki
Black
Charcoal
XS
S
M
L
XL
XXL

Not only does the Men's Altitude Base Layer Tee look and feel good, it's also incredibly versatile, taking you through a wide range of temperatures and conditions. Wear this Base Layer T-shirt as part of our layer system for extra warmth, and when the temperature rises, you’ve got the perfect lightweight and breathable T-shirt that delivers the comfort and performance you need to go the distance.

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

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

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

True to size. Model is 6'2" and wears size medium.

Size Guide. Contact Fit.

Snow sports

Cycling

Running

170gsm lightweight

96% superfine Australian Merino

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

MicroMerino®  Fabric. 

BENEFITS OF MERINO

LIGHTWEIGHT
THERMO REGULATING
SUPER SOFT & COMFORTABLE
BREATHABLE
MOISTURE WICKING
ODOUR RESISTANT
NATURAL
ETHICALLY MADE

Customer Reviews

Based on 12 reviews
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(12)
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R
R.W.
Altitude Tee

Super comfy for a run thorough the wet Adelaide hills.

Thank you for the review! Enjoy the trails this winter in your new Tee!
S
S.F.

Great fit and feels superbly smooth and comfortable on. Temperature control on cool morning rides was as good as expected.

Thanks for the awesome review, Samuel!
D
D.
Feels great

Purchased this as my active base layer for Backcountry split-boarding. As yet to trial in that scenario, but on a 10km run in 12*c winter evening, it felt great next to skin.
Purchased the medium (183cm and 83kg) and its a great snug, next to skin piece with a good bit of stretch too.

Hi Dowdy, great to hear you've loving your new purchase, thank for taking the time to review it! Thanks also for the size advice, its really helpful for other customers trying to find their perfect fit.
G
G.F.

Excellent product & service

Hi Graham, Thanks for the positive review. We work hard to make great products with great customer service to match! We’re happy to hear we hit the mark for you!
E
E.
I am definitely coming back for more!

The Altitude base layer is a great piece to have under any circumstance. If you think it is too hot of a day to wear a merino wool piece, then you have stereotyped too much before even trying it. The soft feel of the Merino wool, along with the breathability is what makes this piece so awesome! Please understand that this is a very active piece, as I am 6’2” and 180 lbs. and the product fit perfectly. Whether you are going for a short run, or a long trek (longer than 5 hours) this is a piece I would recommend putting in your arsenal. You will never regret it and the workmanship put into building up this product is clearly above the rest. Never felt so confident with a piece on until I got this. Keep it up I/O Merino! I am definitely coming back for more!

E
E.
I am definitely coming back for more!

The Altitude base layer is a great piece to have under any circumstance. If you think it is too hot of a day to wear a merino wool piece, then you have stereotyped too much before even trying it. The soft feel of the Merino wool, along with the breathability is what makes this piece so awesome! Please understand that this is a very active piece, as I am 6’2” and 180 lbs. and the product fit perfectly. Whether you are going for a short run, or a long trek (longer than 5 hours) this is a piece I would recommend putting in your arsenal. You will never regret it and the workmanship put into building up this product is clearly above the rest. Never felt so confident with a piece on until I got this. Keep it up I/O Merino! I am definitely coming back for more!





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Fabric Guide

While Merino is an amazing natural fibre, not all Merino fabrics are created equal. At ioMerino, we make our own fabrics, using only the best quality fibres, and to very specific specifications that make the most of the natural benefits of Merino. All of them are 'Merino rich’. No cheap blends passed off as Merino. No cheaper scratchy fibres or synthetic substitutes to save money. No unethical production. And each fabric is made for a specific purpose. So if you see something with a small amount of elastase or nylon added, you can be sure it absolutely needs to be there to enhance the natural stretch and durability. 

It took every bit of our 140 years of experience in the wool industry to perfect our fabrics, but we think you’ll agree the end result was more than worth the effort.

Ethically Made. Ethically Sourced. Perfectly Natural. 

 

Altitude / Zodiac

Lightweight 170gsm 96% Australian Merino Wool with 4% elastane for extra stretch and comfort. A MicroMerino® Fabric. 

 

Ultra / Universal

Lightweight 160gsm 83% Australian Merino Wool blended with 12% nylon blended for extra durability and 5% Elastane for stretch and comfort.

 

Chaser

Midweight 265gsm 96% Australian Merino Wool with 4% elastane for extra stretch and comfort. A MicroMerino® Fabric. 

 

Summerino - Keystone 

Ultra Lightweight 150gsm 100% Australian Merino Wool. A MicroMerino® Fabric. 

 

Merino Compression

Midweight 280gsm 76% Australian Merino Wool, 15% Elastane and 9% Nylon for extra stretch and compression properties.

 

Vital

Ultra lightweight ribbed 155gsm 100% Australian Merino Wool. A MicroMerino®  Fabric. 

 

Summit

Outer Weight 280gsm Fleece 100% Australian Merino Wool. MicroMerino®  Fabric. 

 

Pinnacle

Midweight 260gsm 100% Australian Merino Wool. A MicroMerino®  Fabric. 

 

Elemental 

Midweight 260gsm waffle texture 100% Australian Merino Wool. A MicroMerino®  Fabric. 

 

Stride / Glacier / Velocity

Midweight 255gsm French Terry 100% Australian Merino Wool. A MicroMerino®  Fabric. 

 

Natural Merino Wool benefits: