REI Co-op Lightweight Crew Base Layer Top - Infants'/Toddlers'
Start layering your little ones with this warm, breathable REI Co-op Lightweight Crew base layer top. It features a made-to-move design and all of the comfy for a day of play.
- Polyester/spandex blend fabric is soft and fast drying
- Odor-control treatment regenerates between laundry days
- Designed to hug your tot as they move
- Soft, durable seams are smooth to the touch
- Extended back hem stays tucked in when they lean forward
- UPF 50 sun protection
- Made using bluesign®-approved materials, which conserve resources and protect the health of the environment, workers and wearer (your tot!)
- Made in a Fair Trade Certified™ factory
- 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 TopsBest Use | Multisport |
---|---|
Shirt Type | T-shirt |
Fabric | 82% polyester/18% spandex (bluesign®-approved) |
Sun-Protective Fabric | Yes |
UPF Rating | 50 |
Moisture Wicking | Yes |
Quick Drying | Yes |
Underwear Weight | Lightweight |
Sleeve Length | Long Sleeve |
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.

