REI Co-op Midweight Long Underwear Bottoms - Asphalt - Kids'
This product is not available. Good news: we have a newer version.
The kids' REI Co-op midweight long underwear bottoms are a warm, breathable base layer that will keep them happy on long days playing out in the cold.
Shop newer version- Made of a durable yet soft polyester/spandex fabric that stretches, wicks sweat and dries fast
- Odor control treatment regenerates between launderings
- UPF 50 sun protection
- Fitted
- bluesign® fabric; learn more about this sustainability standard at REI.com/stewardship
- REI Co-op brand is certified to The Climate Label; we actively fund efforts to reduce carbon emissions across our business and support climate projects around the world
- Made in a Fair Trade Certified™ factory
- Contains materials that meet the bluesign® criteria
Imported.
View all REI Co-op Kids' Base Layer BottomsBest Use | Multisport |
---|---|
Fabric | 89% polyester/11% spandex |
Sun-Protective Fabric | Yes |
UPF Rating | 50 |
Moisture Wicking | Yes |
Quick Drying | Yes |
Underwear Weight | Midweight |
Inseam (in.) | 25 inches |
Gender | Kids' |
Sustainability | Contains materials that meet the bluesign® criteria Fair Trade Certified™ factory From a Climate Label Certified brand |
XXS | XS | S | M | L | XL | |
---|---|---|---|---|---|---|
Numerical Size | 5 | 6-7 | 8 | 10 | 12 | 14 |
Height Range | 45 | 47 1/2 - 50 | 52 | 57 | 61 1/2 | 65 1/2 |
Across Shoulder | 11 | 12 1/4 | 13 | 13 1/2 | 14 | 14 3/4 |
Chest | 23 | 24 - 25 | 26 - 27 | 28 - 29 1/2 | 30 1/2 - 31 1/2 | 32 - 33 |
Sleeve Length | 21 | 22 - 23 1/2 | 24 - 25 | 26 - 27 | 27 1/2 - 28 1/2 | 29 1/4 - 30 1/4 |
Waist | 21 1/4 | 22 - 23 | 24 - 25 | 26 - 27 | 27 1/2 - 28 1/2 | 28 3/4 - 29 3/4 |
Hip | 23 3/4 | 24 1/4 - 26 1/4 | 27 - 28 | 29 - 31 | 32 - 33 | 34 - 35 |
Inseam | 19 | 21 - 22 3/4 | 23 - 24 | 25 - 26 1/2 | 27 - 29 | 29 1/2 - 30 1/2 |
Sizing Notes
Measurements are stated in inches unless otherwise indicated. Size chart values represent body measurements, not garment measurements.
Inseam is measured to the floor.
Better gear is built together
From feedback to field testing, all of our gear is dialed-in by REI Co-op members. Their adventures informed every stitch and detail—making for better, longer-lasting gear.

