REI Co-op Lightweight Base Layer Bottoms - Infants'/Toddlers'
Layer your little one with the REI Co-op lightweight base layer bottoms for infants and toddlers. Designed for warmth, these bottoms are easy to pull on and absorb moisture as it comes.
- Durable yet soft polyester/spandex blend fabric wicks moisture and dries quickly
- Flatseam construction and low-profile waistband keep toddlers comfortable as they move
- UPF 50 fabric shields against harmful UV rays
- Made using bluesign®-approved materials, which conserve resources and protect the health of the environment, workers and wearer (your tot!)
- 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
- Contains materials that meet the bluesign® criteria
- Made in a Fair Trade Certified™ factory
Imported.
View all REI Co-op Kids' Base Layer Bottoms| Best Use | Multisport |
|---|---|
| Fabric | 82% polyester/18% spandex (bluesign®-approved) |
| Sun-Protective Fabric | Yes |
| UPF Rating | 50 |
| Moisture Wicking | Yes |
| Quick Drying | Yes |
| Underwear Weight | Lightweight |
| Gender | Toddlers' Infants' |
| Sustainability | Fair Trade Certified™ factory Contains materials that meet the bluesign® criteria From a Climate Label Certified brand |
| 0-3 MO | 3-6 MO | 6-12 MO | 12-18 MO | 18-24 MO | 2 T | 3 T | 4 T | |
|---|---|---|---|---|---|---|---|---|
| Height Range | 24 | 27 | 30.5 | 33 | 35 | 35 | 38 | 41 |
| Weight Range | 10-15 lbs. | 15-20 lbs. | 20-25 lbs. | 25-28 lbs. | 28-32 lbs. | 28-32 lbs. | 32-35 lbs. | 35-40 lbs. |
| Chest | 17 | 18 | 19 | 19.75 | 20.5 | 20.5 | 21 | 22 |
| Sleeve Length | 12 | 13 | 14.5 | 15.5 | 17.5 | 17.5 | 18.5 | 19.75 |
| Waist | 17.5 | 18.5 | 19.5 | 20.25 | 21.5 | 21.5 | 22 | 22.5 |
| Hip | 17.5 | 18.5 | 19.5 | 20.25 | 21 | 21 | 21.5 | 22 |
| Inseam | 8.5 | 10 | 12 | 13.5 | 14 | 14 | 15.5 | 17 |
Sizing Notes
Measurements are stated in inches unless otherwise indicated. Size chart values represent body measurements, not garment measurements.
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 Toddler Base Layer
My daughter been wearing these 3-4 times a week for the last 4 months and they are perfect in every way. We only use her other base layers if these are absolutely filthy. These are: a perfect fit for my 1.5 year old's body, soft with itch-free seams and tags, stretchy but hold their shape, easy to clean, and holding up great with washing. I would say they run just slightly large in a good way. They were a bit loose but still good for layering at first. She's now an inch or two outside of the size chart and they fit snugly without constricting.
Warm and perfect for layering
Works great to layer under Halloween costumes on those cold October nights and will work great as a layer when my little plays in the snow or goes on snowshoeing adventures with my in the carrier.
REI bring these back PLEASE!!!!
Not sure why these were discontinued since they were amazing- no tags, lightweight, not itchy, quick drying and like another reviewer said, the fit is slightly big in aa perfect way. Plus the little hiker print is adorable. So hard to find lightweight layers.... REI bring these back PLEASE!!!!
Daughter loves them.
My daughter loves these, she loves the colors and patterns. My daughter is a little small for her age, so its hard to tell, but I think these run a little big. We got the 4T size and she's about to turn 5, and they're baggy on her, they should last all ski season and summer camping season.
FR, bro! So awesome!
See my review for "REI Co-op Lightweight Long Underwear Top - Infants'/Toddlers'" bro. These are totally worth the purchase, broheim!