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Altitude Zip

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Colour
Dark Khaki
Black
Gothic Grape / Pink
Moroccan Blue
Green
Bright Rose
Slate Marle
Size

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 small in Dark Khaki.
Model specs - height 167cm, chest 78cm, waist 63cm, hips 81cm.

Model wears a size medium in Moroccan blue, Gothic Grape / Pink and Gothic Grape.
Model specs - Height 164cm, 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.

A MicroMerino® Fabric.

BENEFITS OF MERINO

LIGHTWEIGHT

THERMO REGULATING

SUPER SOFT & COMFORTABLE

BREATHABLE

MOISTURE WICKING

ODOUR RESISTANT

NATURAL

ETHICALLY MADE

Customer Reviews

Based on 64 reviews
89%
(57)
5%
(3)
5%
(3)
2%
(1)
0%
(0)
J
Jordan (Perth, AU)
Such great quality

This top is just as pictured. It is so flattering! The material is extremely soft and it's nice enough to wear as a top without covering it up under your other layers.

LOVE IT

K
K.E. (Sydney, AU)
Altitude zip

Great top. Bought to wear under my ski jacket. Warm and comfortable. I sized up to a medium after reading the reviews and it fits perfectly (all my other iomerino gear is size S).

J
Joanne (Sydney, AU)
great quality but runs very small

Awesome quality as always from IO however I would suggest going up 1-2 sizes. I'm usually a medium which was more like a size 8. I exchanged for a size L however an XL would have perhaps allowed me to wear a tshirt underneath. I don't think anyone over a standard size 16 would fit this style (altitude).

R
Robert Trewin (Brisbane, AU)
Sooooo warm

My wife who no matter which season is cold the Altitude pullover does the job of keeping her warm all the time.
We finaly found an outer layer that works as described along with a beautiful look, feel and quality light knit finish.

A
Ana Sala-Oviedo (Adelaide, AU)
Altitude Zip - blue

The most striking blue colour. Cozy and thin, perfect as an underlayer or for in-between seasons. With the zip up it covers nicely the neck. It is my second one - I love them! Thank you IO

A
Andi Gough (Melbourne, AU)
Favourite season cross over top

Smart enough to wear casually out, comfortable for running and riding, does what the bio says. True to colour. I had one previously, lasted years but finally wore out, expect this will last just as long

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