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  • Made from warm, stretchy and incredibly soft 260gm merino wool with a cozy Jacquard knit, the Vertex has a half zipper so you can easily adjust to changing temperatures
  • Secure zippered arm pocket stashes your ski pass and other small items
  • Offset, flatlock seams prevent chafing when you're wearing a pack
  • Elliptical hem
  • Thumbholes


View all Icebreaker Women's Long Underwear Tops

REI membership


Best Use Snowsports
Shirt Style Zip-front
Fabric Merino wool
Moisture Wicking Yes
Underwear Weight Midweight
Sleeve Length Long Sleeve
Thumbholes Yes
Gender Women's

Size chart

Sizing notes

Measurements are stated in inches unless otherwise indicated. CHOOSING THE RIGHT SIZE: If your body measurements are midway between two sizes, select the smaller size for a tighter fit or the larger size for a looser fit. If your body measurements result in different sizes, we recommend using your chest measurement for tops and your hip measurement for pants.

Rated 4 out of 5 by from Great mid layer I received this as a Christmas gift as a mid layer for long distance winter running & I've been very happy with the fit, comfort & warmth. I also wore it as a mid layer for skiing & was perfect temp. I am 5'7.5" and 135# with broad shoulders so I wear a M in tops. It fits perfect. Perfect length & doesn't ride up. Roomy enough to have a base layer & not feel claustrophobic but not too big where it feels too baggy. Washes well (I didn't put it in the dryer). I don't typically wear wool when I exercise so as I sweat, I do smell "wooly" a bit, but don't smell it until I stop & my body cools down.
Date published: 2017-01-05
Rated 5 out of 5 by from Love this top! I wear this in the black and the two color black and white version during the day and am able to dress it up with either a nice belt or sweater. I am always cold so this top keeps me warm and I find it fashionable and can coordinate it with work clothes. It is very comfortable and it doesn't itch me. I like the length which falls to the mid-hip. I recommend you hang it up to dry and I wash it in the machine with cold water. I am 5'4" and weigh around 125lbs. I bought the extra small and it fit perfectly! I highly recommend the top!
Date published: 2016-10-25
Rated 5 out of 5 by from such great stretch This piece is so warm and equally pretty. I find myself wanting to wear it casually as the print is so cool. Great fit. Love the sleeve pocket for keys or credit card. So soft.
Date published: 2016-10-13
Rated 5 out of 5 by from Super snuggly and versitile The print is really pretty, makes it a good piece for running around town on chilly days, very practical without looking too technical. Also makes a great snowboarding base layer on extra cold days. Love the thumb holes, nothing worse than snow sneaking in the gap between your gloves and your shirt!
Date published: 2016-12-10
Rated 5 out of 5 by from Second time for a reason This is the second set of merino base layers. Both sets fit perfectly and are warm and comfortable. I use them under a heavy hunting suit for fall and winter hunting and under a work uniform for warmth without bulk. They do very well in both applications.
Date published: 2016-12-28
Rated 5 out of 5 by from Overall Excellent Product This top does not run too big or too small (coming from someone that struggles with clothes like these due to a larger chest). It's comfortable, but keep in mind it is merino wool so not a silky feeling. A little expensive, but worth it to keep warm!
Date published: 2016-12-13
Rated 5 out of 5 by from Looking good, feeling good I've been wearing it as a sweater over a long sleeved shirt, but it could also be a base layer for winter activities. Snazzy design woven in, not printed. The longer length sleeves with the thumb hole keeps my hands warm in a chilly room.
Date published: 2016-12-12
Rated 5 out of 5 by from Bernice From ordering to receiving excellent process Opening my package to trying on excellent Quality of the product, excellent Haven't worn for more than one day and haven't washed them yet. Hopefully no shinkage
Date published: 2016-12-19
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