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Altitude Zip

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.

 

 

 

S

M

L

XL

XXL

Waist

Inch

28-30

32-34

36-38

40-42

44-46+

 

cm

71-76 

81-86

91-96

101-108

111-116+

Chest

Inch

34-36

38-40

42-44

46-48

50+

 

cm

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
Waist inch 28 - 30 32 - 34  36 - 38 40 - 42 44 - 46
cm 71 - 76 81 - 86 91 - 96 101 - 108 111 - 116
Length  inch 41.3 41.7 42.3 42.5 43.1
cm 105 106 107.5 108.5 109.5

Merino-Compression Leggings

Inside leg measurements.

Model height 6'3 , wearing a size large. 

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
Length  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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Black
Forest Marle
Slate Marle
Port Marle
Dark Blue Marle
XS
S
M
L
XL
XXL

The Men’s Altitude Zip Base Layer thermal takes natural temperature regulation to a whole new level. It is the perfect ‘go to’ thermal layer for just about any adventure, especially if you’re expecting to hit a range of temperatures.  Zip down when it’s mild, zip up and thumb loops on when the temperature drops. The high collar also offers an extra level of warmth beyond the Men's Altitude Crew Neck Base Layer  version of this top.   

Flatlock stitching, raglan sleeves and tag free to eliminate chafe and maximize comfort. The drop back hem and extra body length is designed for tucking into your outer layers. Thumb loops keep your hands warm and stop your sleeves riding up when layering. 

This Base Layer Thermal top is the perfect combination of performance, warmth and comfort.  

Ultra Trail Australia mandatory gear approved thermals.

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

Drop back hem and extra length in body. 

Thumb loops.

Zip Neck.

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

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 25 reviews
92%
(23)
4%
(1)
0%
(0)
4%
(1)
0%
(0)
N
N.
Great for riding

Purchased this for my partner to wear under his leathers whilst riding his motorbike. Fits him perfect. The thumb loops are great to stop the sleeves riding up the arm and the drop back hem is wonderful, it allows the top to stay tucked in whilst bending forward on the bike.

Glad to hear your partner likes the extra length in the Altitude Range. I've heard the women's Altitude Zip is pretty good too :)
I
I.A.D.
It is not what I expected

The top I bought is well made but I think not the colour I ordered. I also dislike the ioMerino name tag that is sewn onto the front bottom left corner of the top. Firstly it looks cheap. Secondly I am not proud to wear your label.

Hi Ian, Thanks for reaching out and providing feedback for us. We're sorry to hear you weren't happy with your Altitude top and it wasn't what you expected. I checked your order and we have recorded that we sent you the Forest Green that you originally ordered, but if there has been a mix up please send us an email at customerservice@iomerino.com so we can follow this up and rectify this issue for you ASAP. If you would prefer a style without the ioMerino patch branding, the Ultra base layer range is a lot plainer and has minimal branding.
M
M.B.
Excellent zip

Fits well, comfortable and just right for the cold mornings on the Mountain.

Thank you for the review Michael! Glad you're staying warm
B
B.
So good

Love the fit, the long body, the thumb loops, the ability to regulate temp with the zip... and of course the softness, comfortability and warmth... so good. My second altitude, my first zip... I'm sure there'll be more. And customer service is first rate too!

Couldn't have said it better ourselves! Thank you for taking the time to write a review, we really appreciate it!
d
d.g.
excellent product

not made in China so thats a plus, nice & long in the body so it won't pull out, haven't worn it as yet but I get the feeling I'll be back for another. Thankyou

J
J.
Excellent for golf

As the weather gets cooler, works well under a polo shirt.





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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: