Altitude Zip

Fabric Guide Size Guide

Women'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 then we recommend you take the size up.

For further assistance with sizing, contact us here.

 

Women's Size Conversion Chart

 

XS

S

M

L

XL

Australian

6-8

8-10

10-12

12-14

14-16

US

2-4

4-6

6-8

8-10

10-12

European

34-36

36-38

38- 40

40-42

42-44

 

Altitude Range - 'Contact Fit'

The Altitude range is designed to be a tight, but comfortable, fit. If you size up it will give you a little extra room, but it will still hug your body as that’s what this range is designed to do. If you want a looser fit consider the Ultra or Universal range. 

    XS S M L XL XXL
Bust inch 30-32 32-34 34-37 37-40 40-42 42-45
cm  76-82 82-88  88-94  94-100  100-107 108-114
Waist inch 24-26 26-28 28-30 30-32 32-35 35-38
cm 58-64 64-70 70-76 76-82 82-89 89-96
Hips inch 34-36 36–38 38-40 40-42 42-44 44-47
cm  84-90  90-96  96-102 102-108 108-115 115-122

 

Universal and Ultra Range - 'Regular Fit'

These garments are designed true to size, but going up a size in the Ultra will give it a slightly looser fit, whilst remaining sporty. The Universal is already designed as a more casual fit. 

    XS S M L XL XXL
Bust  inch 29.5–32.5 32.5–35.5 35.5–38 38–41 41–44.5 44.5–48.5
cm 75-82.5 82.5-90 90-96.5 96.5-104 104-113 113-123
Waist inch 23.5–26 26–29 29–31.5 31.5–34.5 34.5–38.5 38.5–42.5
cm 60-66 66-73.5 73.5-80 80-87.5 87.5-94.5 97.5-108
Hips inch 33–35.5 35.5–38.5 38.5–41 41–44 44–47 47–50
cm  83.5-90 90-97.5 97.5-104 104 -111.5 111.5-119.5 119-127

 

Women's Stride Tracksuit pants

Measurements include the ankle cuff. Please keep in mind the style of these pants is slightly drop crotch. 

Outside leg measurement includes waist band.

Measurements in cm. 

 

XS

S

M

L

XL

Outside Leg

94.3

96.1

97.9

99.7

101.5

Inside Leg

66.4

67.6

68.8

70

71.2

 

Women's Compression Leggings 

Inside leg measurements.

Model height 5'10 wearing a size small. 

Measurements in cm. 

 

XS

S

M

L

XL

XXL

Inside Leg

59.5

62

64.5

67

69.5

72.8

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Green
Black
Dark Blue Marle
Bright Rose
Moroccan Blue
Charcoal Marle
XS
XS
S
S
M
M
L
L
XL
XL
XXL
XXL

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. The Women’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 Women'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.  

(For a more relaxed fit try our Ultra Zip.)

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 5'10" and wears size small in Stripe, Raspberry, Charcoal Marle, Dark Blue Marle. Model wears size medium in Black.

Model wears size small - Bright Rose. Model specs - size 8-10, height 170cm, chest 80cm, waist 67cm, hips 93cm.

Model wears size small - Green. Model size 6-8, height 170cm, chest 81cm, waist 63.5cm, hips 89cm

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 46 reviews
85%
(39)
7%
(3)
7%
(3)
2%
(1)
0%
(0)
I
Ian Wright (Doncaster, AU)
Altitude Zip

I now have five, they are brilliant, "bulletproof" compared with other brands that often come apart at the seams, etc. Really good fit also, I would have no hesitation in recommending it.

Fabulous to hear Ian, thanks for taking the time to let us know!

D
Danni Vanderheul (Adelaide CBD, AU)
Perfect fit for running

Im a regular runner, usually I get quite hot & I've found the top provides the perfect level of warmth without over heating. It's the only top I'm reaching for lately. I'm an XS but chose a small to ensure no restriction of movement, it's been perfect!

L
Linda Newby (Adelaide CBD, AU)
Looks Good Feel Good

Although I am generally size small I ordered the Medium. Perfect fit. The size small favoured a young svelte like the model. Love the colour contrast with the zipper. The Raspberry pink is not as vivid as shown in the promo however it still looks great.

B
Belinda Cowell (Melbourne, AU)
Great product

I feel fabulous wear this. Looks good, excellent quality and is super warm.

J
Jenny Austin
perfect as base layer for running and for working from home!

Perfect as base layer for running and for working from home! I go the Moroccan blue and loved the colour.
Size was true as described - I sized up to avoid super cling but based on my measurements - I got the fit I expected/hoped for.

C
Caitlin (Adelaide, AU)

So impressed, using for winter trail running and has been perfect!





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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 - Celsius 

Made from 45% ultra fine MERINO (Ultra Lightweight 150gsm), 45% natural TENCEL (made from sustainably grown wood fiber), and 10% nylon for extra durability. 

 

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: