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  • Ultrafine 18.5-gauge merino wool offers a soft feel without the scratchiness
  • Merino wool naturally wicks away sweat and resists odors
  • Flat seams eliminate chafing
  • Tall neck extends coverage; zipper with chin guard lets you adjust ventilation
  • Droptail hem stays tucked in and is designed to work under a pack's hipbelt
  • Designed to hug the body for optimum performance
  • Machine washable


View all REI Co-op Kids' Long-Underwear Tops

REI membership


Best Use Multisport
Shirt Style Zip-front
Fabric Merino wool
Moisture Wicking Yes
Quick Drying Yes
Underwear Weight Midweight
Sleeve Length Long Sleeve
Gender Kids'

Size chart

Rated 5 out of 5 by from Want to live in it! I am a women's petite small (5'3" 123 lbs) and was skeptical about trying a children's size but this kids XL works better for me than the woman's small! Love the fabric. It is so comfortable, I want to wear these every day! Especially great base layer for cool/cold weather hiking. Can't beat this fabric!
Date published: 2017-01-31
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