Sale Ends May 27

REI Co-op  Merino 185 Base Layer Bottoms - Women's Plus Sizes

Sale Ends May 27
$55.89Compared to $79.95Save 30%
*Intermediate markdowns may have been taken.
Color: Black
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Just as beloved while sweating as while sleeping, the ultrafine merino wool of the women's REI Co-op Merino 185 base layer bottoms is soft, breathable and naturally odor resistant.


  • Ultrafine 185 g merino wool offers a soft feel without any itchiness
  • Made with 100% merino wool that naturally breathes, wicks away sweat, dries quickly and resists odors, making it an ideal multiday trip companion
  • UPF 30 sun protection
  • Flat seams and merrow stitch construction eliminate chafing
  • Crotch gusset allows full range of movement
  • Soft elastic waistband has a low profile so it's comfortable under other layers
  • Designed to hug the body for optimum performance
  • Weight: 9 oz. (size 3X)
  • Machine wash warm, gentle cycle, with wool wash product; do not twist or wring; remove promptly; do not bleach; tumble dry low; dry cleaning not recommended
  • Field-tested on its own and as a base layer while hiking, running, rock climbing, cycling, skiing and camping in diverse climates across the U.S.
  • REI is Climate Neutral Certified; as we work to actively reduce our footprint, we measure annual carbon emissions and purchase an equivalent amount of verified carbon credits
  • Made in a Fair Trade Certified™ factory


View the REI Co-op Merino 185 Product LineView all REI Co-op Women's Base Layer Bottoms

Technical Specs

Item #192868
Best Use



Merino wool

Sun-Protective Fabric


UPF Rating


Moisture Wicking


Quick Drying


Underwear Weight


Inseam (in.)

29 inches




Fair Trade Certified™ factory

From a Climate Neutral Certified brand

Size Chart

Numerical Size000-24-68-1012-14161820-2224-2602468101214161820222426
Sleeve Length29.53030.53131.532.533.533.534.5303030.530.5313131.531.532.533.533.533.534.534.5

Sizing Notes

Measurements are stated in inches unless otherwise indicated. Some women's pants are available in petite and tall sizes. Typically petite sizes fit women 4'11" to 5'3". Regular sizes fit women 5'4" to 5'8". Tall sizes fit women 5'9" to 5'11".

PETITE: Generally, as compared to regular sizes, petite sizes are 2.5 inches shorter in inseam, 1 inch shorter in body length, 1.25 inches shorter in sleeve length and ¾ inch shorter in total rise.

TALL: tall sizes are 3 inches longer in inseam, 2 inches longer in body length, 2.5 inches longer in sleeve length and 1.25 inches longer in total rise.

Capri or cropped pants have an intentionally shorter inseam—reference the technical specs instead of this chart.

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