How to Choose Base Layers

Outfit yourself for adventure with this 100% merino wool base layer top from REI Co-op. The breathable, ultrafine wool naturally resists odors and pilling. Flat seams are comfortable on the skin.
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Imported.
View the REI Co-op Merino 185 Product LineView all REI Co-op Women's Base Layer Tops| Best Use | Multisport |
|---|---|
| Shirt Type | Partial-zip |
| Fabric | 100% merino wool |
| Sun-Protective Fabric | Yes |
| UPF Rating | 30 |
| Moisture Wicking | Yes |
| Quick Drying | Yes |
| Underwear Weight | Lightweight |
| Sleeve Length | Long Sleeve |
| Gender | Women's |
| Sustainability | Fair Trade Certified™ Factory From a Climate Label Certified brand |
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This merino pullover is very lightweight, as in it weights next to nothing, so I thought it might be a good fall travel layer. Unfortunately I don’t like the design much. The periwinkle color is lovely and the half zip is nice, but the piping gives it a strong technical gear look that’s totally unnecessary - if it were just solid colored it would be a normal looking shirt. That said, it also pulls in the chest (see the horizontal lines in the picture). I wore it on a mild evening (55 F) and was surprised it felt like nothing when sitting on my porch, or at any rate no warmer than the silk blouse I’d been wearing moments before. But when I hopped on my bike, it warmed up fast. So I guess this will be purely a cold weather technical layer for me and nothing more flexible.


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From feedback to field testing, all of our gear is dialed-in by REI Co-op members. Their adventures informed every stitch and detail—making for better, longer-lasting gear.

