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 Summit Zip Hoodie

Measurements in cm. 

Measurements include ribbed hem.

Sleeve length from pit to hem.

 

XS

S

M

L

XL

XXL

Pit to pit

41.4

45.2

49

52.8

56.6

60.4

Torso Length

60.5

63

65.5

68.1

70.6

73.2

Sleeve Length

47.9

50.5

53

55.5

58.1

60.6

 

Women's Stride Tracksuit pants

Measurements do not include the ankle cuff. 

Please keep in mind the style of these pants is slightly drop crotch. 

Measurements in cm. 

 

XS

S

M

L

XL

XXL

Waist

72.4

77.2

82

86.8

91.6

96.4

Hip

98.2

104

108.8

113.6

118.4

123.2
Leg Length 56.4 57.6 58.8 60 61.2 62.4

 

Women's Freedom Sweatpant

Outside leg measurement includes waist band.

Measurements in cm. 

 

XS

S

M

L

XL

XXL

Waist

68.4

73.2

78

82.8

87.6

92.4

Hip

94.4

99.2

104

108.8

112.6

118.4

Outside Leg

95.6

96.8

98

99.2

100.4

101.6


Women's Pace Compression Leggings - Original

Measurements in cm. 

 

XS

S

M

L

XL

XXL

Waist

72.4

77.2

82

86.8

91.6

96.4

Hip

98.2

104

108.8

113.6

118.4

123.2
Leg Length

60.5 63 65.5 68.1 70.6 73.2

 

Women's Pace Compression Leggings

Measurements in cm. 

 

XS

S

M

L

XL

XXL

Waist

72.4

77.2

82

86.8

91.6

96.4

Hip

98.2

104

108.8

113.6

118.4

123.2
Leg Length

60.5 63 65.5 68.1 70.6 73.2

 

Women's Pace 3/4 Compression Leggings

Measurements in cm. 

 

XS

S

M

L

XL

XXL

Waist

72.4

77.2

82

86.8

91.6

96.4

Hip

98.2

104

108.8

113.6

118.4

123.2
Leg Length

42.2 44.8 47.3 49.8 52.4 54.9


Women's Pace Bike Shorts

Measurements in cm. 

 

XS

S

M

L

XL

XXL

Waist

72.4

77.2

82

86.8

91.6

96.4

Hip

98.2

104

108.8

113.6

118.4

123.2
Leg Length

10.5 13 15.5 18.1 20.6 23.2

 

Women's Yoga Pants

Measurements in cm. 

 

XS

S

M

L

XL

XXL

Waist

72.4

77.2

82

86.8

91.6

96.4

Hip

98.2

104

108.8

113.6

118.4

123.2
Leg Length

56.4 57.6 58.8 60 61.2 62.4

 

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1 item left
Gothic Grape / Pink
Moroccan Blue
Gothic Grape
Green
Black
Bright Rose
Blue
Moroccan Blue / Orange
Slate Marle
XS
S
M
L
XL
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 wears a size medium in Moroccan blue, Gothic Grape / Pink and Gothic Grape.
Model specs - Chest 90cm, waist 70cm, hops 95cm.

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

Model wears size medium in Black.

Model is 5'10" and wears size small in Charcoal Marle. 

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

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 56 reviews
88%
(49)
5%
(3)
5%
(3)
2%
(1)
0%
(0)
F
Fiona Whitesen (Sydney, AU)
Love this!

Fits well, high quality, very impressed.

S
Sadie Gent (Adelaide, AU)
Love it

Comfortable, soft, not stinky. Exactly what I expected, it’s a skin fit - as described. I’m a size 10 usually and got a size small - it fits like the pics. My only improvement would be if you could put those slots in the arm so you can poke your watch through when running, the sleeves are hard to pull over my watch.

A
Alison Rickert (Sunshine Coast, AU)
Winter warmth

Light, body hugging, gorgeous colours and collar gives that extra neck warmth low cuts lack

E
Emma Tanzer (Adelaide, AU)
BEST winter warmth!

This is my second iomerino altitude zip, I absolutely love it and wouldn’t survive winter running without it. Super warm and gets me out on a 3 degree day at 5 am. Wouldn’t be without it ever. Cheers ioMerino keep up the good work 🌟

R
Renata Williams (Sydney, AU)
Altitude Zip top

I bought this top for my son for his cross country/winter running training. He stated it fits well is nice and warm and is extremely comfortable to wear. Highly recommended.

E
Erika (Melbourne, AU)
Bright and beautiful

I bought the Altitude Zip in bright rose, as my base layer ahead of some winter trail runs. I’m loving it. Wicks moisture beautifully, washes well, and the colour is gorgeous. Will be buying 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 - 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: