How to Choose Base Layers

Taking your little one to the slopes or on a cold-weather hike? These REI Co-op midweight base layer bottoms are warm and very good at wicking moisture. Their elastic waistband offers easy on/off.
Imported.
View all REI Co-op Kids' Base Layer Bottoms| Best Use | Multisport |
|---|---|
| Fabric | 257 g/m² 87% recycled polyester/13% spandex (bluepass certified) |
| Sun-Protective Fabric | Yes |
| UPF Rating | 50+ |
| Moisture Wicking | Yes |
| Fly Opening | No |
| Underwear Weight | Midweight |
| Inseam (in.) | 13.5 inches |
| Gender | Toddlers' |
| Sustainability | Contains bluepass certified material Contains recycled materials From a Climate Label Certified brand |
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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.

