This is the product description text that will appear here.
Quantity
1
Description
Our Altitude range was originally designed as a baselayer, to fit close to your body for maximum performance, so it’s snug but soft, with plenty of give for extra comfort. If you’re usually a medium, for example, you might find the medium ...
Reviews
5.0
27 ratings
5
4
3
2
1
The warmest ever
I have a few "warm" underlayer pieces as I do feel the cold, but this one is definitely the best ever. I will be back for more next winter!
K
Kat · September 2, 2025
Altitude Crew - beautiful tops
First time purchasing from IO and these tops are so beautiful, the range of colours are wonderful. So light and warm, love the length. Normally a size S/10 generally, but purchased L and happy with the fit as they are still body hugging but not tight. Super stylish. Will love wearing these.
L
LissG · August 13, 2025
Love my attitude crew
Comfy and warm, great for cold morning runs. Sizing runs a bit small
