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Altitude Racer Back Tank

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 try choosing the smaller size.

For further assistance with sizing, contact us here.

 

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

 

 

 

BUST

WAIST

HIPS 

XS

inches

29.5–32.5

23.5–26

33–35.5

cm

75-82.5

60-66

83.5-90

S

inches

32.5–35.5

26–29

35.5–38.5

cm

82.5-90

66-73.5

90-97.5

M

inches

35.5–38

29–31.5

38.5–41

cm

90-96.5

73.5-80

97.5-104

L

inches

38–41

31.5–34.5

41–44

cm

96.5-104

80-87.5

104 -111.5

XL

inches

41–44.5

34.5–38.5

44–47

cm

104-113

87.5-94.5

111.5-119.5

XXL

inches

44.5–48.5

38.5–42.5

47–50

cm

113-123

97.5-108

119-127

 

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

 

Socks

Sizes give in US shoes sizes 

S 5.5 - 6.5
7 - 9
L 10 - 12
XL 13+

 

 

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Black
Grey
Stripe
Blush Marle
Slate Marle
XS
S
M
L
XL
XXL

The Women's Altitude Racer Back Tank is a great all-rounder; ideal for wearing on its own in warm climates as it's light and breathable, perfect for hiking, running, yoga and working out. For the in-between seasons and cold weather, wear this singlet as part of a layering system for additional and important core warmth.

Tag-free, flatlock stitching and raglan sleeves help eliminate chafe and maximise comfort. Pair your Tank with the Altitude Crop Top for the perfect fit. 

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

Racer back 

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

Size Guide. Contact Fit.

Running

Cycling 

Hiking 

Yoga

170gsm lightweight

96% superfine Australian Merino

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

MicroMerino®  Fabric. 





Customer Reviews

Based on 5 reviews
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M
M.
Perfect basic piece

Love, love, love my top. So warm and comfy. I wear it daily under all my clothes for walking, work, everything. Highly recommended basic piece for everyday use

Hi Marika, thanks so much for the review! I agree, the Altitude Tank is one of my favourites too! A great all rounder! - Emma, ioMerino Team
C
C.F.
Merino Gear

I'm so happy with all my Merino gear. I love the colours, fit & ease of wearing & am looking forward to the cooler months for trying out my new items.

M
M.
go to

This is my go-to tank for the gym and hot yoga, as well as layering under everything in winter. basically, I dont take it off. 11/10 tank top. Highly recommend. Great flattering fit and style.

K
K.
Super soft & many uses

Can't believe how soft and comfortable this tank is. From keeping me warm as an underlayer this winter or on it's own for a run I'm loving it.

J
J.
perfect

I own several merino tanks from different companies, and this is my favorite. Soft, great stretch, sexy fit. I've had mine over a year and wear it weekly or more, with no pilling, holes, or loss of shape. Note for I/O crew: description/photo should mention/show that it's a racer-back tank and fits perfectly over the I/O "crop top" (which is actually a a great sports bra).

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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: