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Altitude Crew

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

The Women's Altitude Crew Neck Base Layer is the perfect ‘go to’ thermal layer for just about any adventure and our all-time best seller.  It’s the perfect thermal layer for core warmth when you’re layering up, yet versatile enough to be worn on its own in milder conditions.

Tag-free, flatlock stitching and raglan sleeves help eliminate chafe and maximise 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 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 

True to size. Model is 5'10" and wears size small.

Size Guide. Contact Fit.

Snow sports

Cycling

Running

BENEFITS OF MERINO

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

Customer Reviews

Based on 38 reviews
97%
(37)
3%
(1)
0%
(0)
0%
(0)
0%
(0)
L
Lyndal (Sydney, AU)
I want more

I feel the cold and am always on the look out for comfortable, non bulky clothing to wear that will take me from inside to outside walking the dogs. I usually wear at least 3 layers plus a vest inside the house in winter, then put on an outer layer for walks. I prefer natural fibres for warmth and also to avoid microplastics in the environment. This top is brilliant! Its soft, comfy, doesn't get all sweaty and make me cold at the end of my walk. I'm pretty much planning on living in it for the rest of the winter. My medium is a perfect fit and I usually go a 10 or 12.

M
Megan Raggio (Adelaide, AU)
Toasty warm.

Love this base layer. I wear it as a warm layer over a tank when going out for my run. It's soft & warm. It also keeps me toasty warm without overheating or sweating when worn under a jumper on frosty morning walks.

S
Sharon (Launceston, AU)
Soft and warm

Bought an Altitude Crew on recommendation from my sister. It is just so comfortable to wear, the fabric is soft and it's a great warm layer. So impressed I bought a couple more!

For women looking for sizing: I'm an hourglass shape, usually but a 14 in tops. I bought an XL in women's fit and it's perfect. Nicely comfy, great next to skin layer on cold days.

T
Tam (Sydney, AU)
Best base layer I’ve found!

I absolutely love my altitude crew for staying warm during early morning chilly winter trail runs or bike commutes to work. They wear really well over time as well, my first one is two years old and still looks like the new one I have just purchased.

A
Angelika Hala (Brooklyn, US)
Warm and Light

bought the Altitude crew and zip to layer but found that it did not work. The close to body fit made the sleeves quite snug around my upper arms, layering was not comfortable. Otherwise, absolutely lovely, very flattering if you feel comfortable in the contoured fit. Super light and super warm at the same time. Wore the crew running with just a light cheap down jacket in 22 F weather - warm enough!

L
Lizzie (Ballarat, AU)
Quality under-layer.

Very close fitting as described - Think body hugging! I am a size 16 and purchased an XL. If I wanted it as an outer layer, I would have gone for an XXL. Good quality and feel, and one of the few tops I can find with a Raglan Sleeve - Please give me more with Raglan sleeves - so much more comfortable on the move! Also, great customer service.





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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: