REI Co-op Midweight Base Layer Bottoms - Kids'
This product is not available. Good news: we have a newer version.
The kids' REI Co-op Midweight base layer bottoms are warm and very good at wicking moisture, making them an ideal base layer for highly aerobic cold-weather fun, like skiing and snowshoeing.
Shop newer version- Durable yet soft recycled polyester/spandex blend fabric wicks moisture and dries quickly
- Flatseam construction, low-profile waistband and crotch gusset keep kids comfortable as they move
- UPF 50 sun protection
- Designed to hug the body for optimum performance
- Contains materials that meet the bluesign® criteria
- 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
Imported.
View all REI Co-op Kids' Base Layer Bottoms| Best 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 Contains recycled materials From a Climate Label Certified brand |
| XXS (4-5) Kids | XS (6-7) Kids | S (8) Kids | M (10-12) Kids | L (14-16) Kids | XL (18) Kids | |
|---|---|---|---|---|---|---|
| Numerical Size | 4 -5 | 6 - 7 | 8 | 10 - 12 | 14 - 16 | 18 |
| Height Range | 41 - 44 | 46.5 - 50.5 | 52.5 | 55.5 - 58.5 | 62.5 - 64 | 67 |
| Chest | 22 - 23 | 24 - 26 | 27 | 28.5 - 30 | 31.5 - 33.5 | 35.5 |
| Waist | 22 - 22.5 | 23 - 23.5 | 24.5 | 25.5 - 26.5 | 28 - 30 | 32 |
| Hip | 23 - 24 | 24 - 27.5 | 28.5 | 30 - 32 | 34 - 36 | 38 |
| Inseam | 17 - 18.75 | 20 - 23 | 24.5 | 25.5 - 27.5 | 30 - 31 | 31.5 |
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.
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Perfect base layer
These are a great base layer for playing in the snow, bumming around the house on cold winter days, sleepwear for camping. My kids love them and I always buy a size up so they can grow into them.
great deal!
Great quality & great price! I’m 5 feet tall (adult woman) and these are perfect! Not only do they keep you warm, but they are super lightweight
Perfect for skiing Big Mountain
My daughter wore these bottoms this holiday season while skiing in Whitefish! While it was not as cold as we've experienced in the past there, this proved to be a fantastic base layer and something I hope will last her through next season! I would expect her to wear these bottoms even while playing in the snow, toobing or even if it gets cold here in the Bay Area under a pair of jeans.
comfortable and warm!
Bought these for a few camping trips. Wasn’t expecting to use them as pajamas, but they kept me quite warm. When it was frosty in the morning, they acted as a base layer underneath my hiking pants and sweatshirt and I was quite comfortable while many were still complaining about the cold. I love them so much I bought a second pair!
Good choice
Light weight long johns. Nice fabric. Good deal for the price.
Good basic
Nice wicking option for under snowpants. Sizing up to a 10/12 for my long-limbed 8 year old, hoping they might last two seasons.
Amazing!!
These are THE BEST!! I am a small adult and I bought these on clearance for evenings in the tent because they are light and packable but still warm and I was not disappointed. These are my go-to sleeping pants and if it's cold they also go nicely as a base layer. The fit could not be more perfect for me. I am 5'4" and 105 lbs and purchased the youth XL. My only wish is that I bought several more pair at the time. Get these!
Great base layer and loungewear
Great base layer and loungewear. Didn’t realize it was a children’s XL. Super deal on clearance.