How to Choose Base Layers

Spun from merino wool, this Icebreaker heavyweight base layer top helps regulate your body temperature. Mesh zones provide breathability during high-intensity pursuits.




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Imported.
View all Icebreaker Men's Base Layer Tops| Best Use | Multisport Fitness |
|---|---|
| Shirt Type | T-shirt |
| Fabric | 100% merino wool |
| Moisture Wicking | Yes |
| Quick Drying | Yes |
| Underwear Weight | Heavyweight |
| Sleeve Length | Long Sleeve |
| Thumbholes | Yes |
| Gender | Men's |
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26 hours. It was my base layer under a LS thermal jersey and lightweight down vest (or light puffy when I became cold). I was also wearing a hydration pack. Sweating was controlled the entire time. I loved the thumb holes for when I put the jersey over it so that the shirt didn't bunch up . Very comfortable.