Classic All-Season Merino Base Layer Long Sleeve - Women's

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Year-round, ultralight versatile base layer

Spring skiing or summer camping? The Classic All-Season Merino Base Layer Long Sleeve is game for either thanks to the body temp regulating and no-stink properties of Merino. Featuring Core Spun technology, Smartwool has wrapped Merino around a nylon core for added durability while still keeping the comfort of ultra-soft Merino next to skin. Smooth flatlock seams help minimize chafing and offset shoulder and side seams lie smoothly beneath pack straps. Performs well on its own in warmer temps or layers up easily when cooler weather rolls in.


Formerly known as the Merino 150 Base Layer Long Sleeve. Packaging may have either name but the product is identical.


Brand Name:
Weight of Baselayer:
Light Weight
4.7 oz (133 g)
Mfg Sku/Part Number:
  • Our slim fit is intended to follow the contours of the body
  • Our lightweight Merino jersey fabric uses a recycled nylon core to increase durability while still keeping 100% Merino wool next to skin
  • Raglan sleeve design eliminates need for shoulder seams
  • Side seams wrap onto front for enhanced fit
  • Stretch merrow stitching designed to elevate comfort, range of motion, and fit
  • Fabric: 88% merino wool, 12% nylon

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