Smartwool Kids’ Classic Merino Thermal Bottoms provide the ultimate warmth and comfort during chilly weather. Made from 100% merino wool, these thermal bottoms are designed for active kids. The interlock knit fabric ensures breathability and superior thermoregulation, allowing for comfortable wear during stop-and-go activities.
With a merino-covered elastic waistband, your little ones will enjoy added comfort without compromising fit. The flatlock seam construction minimizes chafing, making these bottoms perfect for layering under winter gear.
Plus, the merino wool is ZQ-Certified, emphasizing sustainability while ensuring animal welfare. Whether skiing, snowboarding, or just playing outside, these are the thermal underwear kids need to stay cozy and active.
Lisa Ramirez (verified owner) –
These thermal bottoms are fantastic! My kids love how soft they feel, and they stay warm even during our outdoor winter adventures. Highly recommend!
Michael Martinez MD (verified owner) –
We’ve tried several brands, but Smartwool kids’ thermal bottoms are by far the best! They don’t bunch up and fit perfectly under snow pants.
Karen Bradley (verified owner) –
I bought these for my toddler, and they are the perfect cheap midweight merino wool underwear. Super cozy and easy to clean!