How to Choose Base Layers

Stay warm on the coldest winter hikes in these heavyweight base layer bottoms. Icebreaker made them from their premium MerinoFine™ fabric for an extra-soft feel and efficient moisture management.
Imported.
View all Icebreaker Men's Base Layer Bottoms| Best Use | Multisport |
|---|---|
| Fabric | 100% merino wool (exclusive of decoration) |
| Moisture Wicking | Yes |
| Quick Drying | Yes |
| Fly Opening | No |
| Underwear Weight | Heavyweight |
| Inseam (in.) | Unavailable |
| Gender | Men's |
| S | M | L | XL | XXL | XXXL | |
|---|---|---|---|---|---|---|
| Chest | 33-36 | 36-39 | 39-42 | 42-45 | 45-48 | 48-52 |
| Waist | 27-30 | 30-33 | 33-36 | 36-39 | 39-42 | 42-46 |
| Hip | 34.5-37 | 37-39.5 | 39.5-42 | 42-44.5 | 44.5-47 | 47-50.5 |
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.
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