rei 自家品牌有很多，感觉性价比很高

https://www.rei.com/search?q=wool+layer

这件感觉就不错

https://www.rei.com/product/192863/rei-co-op-merino-185-long-sleeve-base-layer-top-womens

还有smartwool 这个牌子，专门做羊毛运动产品的，layer, 羊毛袜都很多

https://www.rei.com/product/217943/smartwool-classic-all-season-merino-long-sleeve-base-layer-top-womens