I/O Bio Merino Sizing Chart
5 out of 5
April 06, 2011
This base layer is great. It fits small -- I would usually wear a small or extra-small and the medium is working fine for me since a use it over another layer. The hood is perfect under a helmet. It provides good warmth in a lightweight fabric that allows for multiple layers if needed.Pros: Great design, Build quality, Performance
Silkiest merino yet
January 14, 2012
This is my third I/O Bio Glory Zip and love it as much as my other two. Love the color. It feels so silky, which most merino does, but this feels extra silky, so nice next to skin. I ordered this in medium, and it fits snug, but not too snug. My other Glorys are Large and are roomier, so I wanted to check how it would feel snugger. I really like it. This seems to be an updated version due to new color and they've added a logo (fairly large, maybe smaller would be better) to the arm near the wrist. This is going to be my sleep layer on my AT Thru-Hike and really like the hood and thumb holes, which make for added warmth in my sleeping bag. Highly recommend this item!Pros: Great design, Build quality, Lasts forever, Performance, Ease of use, Great value
Acai Berry, Black and Carbon Melange.
Available sizes, while supplies last, include size xs, size small, size medium, size large and size extra large: xs, s, m, l, xl.