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- add filter: Kids' Base Layer Tops. 30 results.
- add filter: Kids' Base Layer Bottoms. 6 results.
- add filter: Wool / Wool Blend. 6 results.
- add filter: Polyester / Polyester Blend. 24 results.
- add filter: Deals. 7 results.
- remove filter: Long Sleeve. 30 results.
- add filter: bluesign. 8 results.
- add filter: Fair Trade. 5 results.
- add filter: $20.00 to $49.99. 26 results.
- add filter: $50.00 to $99.99. 4 results.

Long Sleeve Kids' Underwear (30 results)

Kids' Clothing

Remove sleeve-length filter: Long Sleeve

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3 colors available
REI Co-op
Merino Midweight Crew Base Layer Top - Kids'
$49.95
REI Co-op
Midweight Crew Long Underwear Top - Kids'
$20.93 Compared to$29.95
You save 30%
4 colors available
REI Co-op
Midweight Crew Long Underwear Top - Kids'
$20.93 - $29.95
2 colors available
REI Co-op
Merino Midweight Half-Zip Base Layer Top - Kids'
$54.95
ONLINE ONLY

Terramar
Power Play Long Underwear Set - Toddler Girls'
$30.00
ONLINE ONLY

Terramar
Power Play Long Underwear Set - Toddlers'
$30.00
Terramar
Power Play Long Underwear Set - Toddlers'
$30.00
REI Co-op
Merino Midweight Half-Zip Base Layer Top - Kids' - Vivid Viola
$33.93 Compared to$49.50
You save 31%
3 colors available
REI Co-op
Midweight Half-Zip Long Underwear Top - Kids'
$23.93 - $34.95
REI Co-op
Merino Midweight Crew Base Layer Top - Kids' - Vivid Viola
$33.93 Compared to$49.50
You save 31%
ONLINE ONLY
2 colors available
Odlo
Warm Base Layer Shirt & Pants Set - Kids'
$45.00
3 colors available
Patagonia
Capilene Midweight Crew Long Underwear Top - Girls'
$35.00
2 colors available
Terramar
Thermolator II Midweight Long Underwear Top - Kids'
$26.00
Terramar
Thermolator II Crew Top - Kids'
$26.00
3 colors available
Smartwool
Merino 250 Base Layer Crew - Kids'
$60.00
ONLINE ONLY
4 colors available
Patagonia
Capilene Base Layer Set - Infants'
$45.00
Terramar
Midweight Crew Long Underwear Top - Kids'
$26.00
3 colors available
Smartwool
Merino 250 Base Layer Zip T-Neck - Kids'
$65.00
ONLINE ONLY
3 colors available
Odlo
Active Originals Print Long Underwear Set - Kids'
$60.00
5 colors available
Odlo
Warm Midweight Crewneck Base Layer Top - Kids'
$20.93 - $30.00
4 colors available
Patagonia
Capilene Crew Base Layer Top - Toddlers'
$25.00
2 colors available
Patagonia
Capilene Crew Long Underwear Top - Boys'
$35.00
ONLINE ONLY
2 colors available
Odlo
Performance Warm Base Layer Crew Top - Kids'
$40.00
Odlo
Active Originals X-Warm Crew Long Underwear Top - Kids'
$40.00
2 colors available
Patagonia
Capilene Midweight Crew Long Underwear Top - Kids'
$35.00
REI Co-op
Midweight Crew Long Underwear Top - Kids'
$29.95
REI Co-op
Heavyweight Crew Long Underwear Top - Kids'
$29.50
3 colors available
Odlo
Active Originals Warm Base Layer Top - Kids'
$35.00
Odlo
Active Originals Facemask Long Underwear Top - Kids'
$45.00
2 colors available
Helly Hansen
Lifa Active Light Long-Sleeve Base Layer Top - Kids'
$27.73 Compared to$40.00
You save 30%