Designed for active kids, the REI Co-op Kids’ Midweight Thermal Base Layer Bottoms deliver reliable warmth and moisture management during cold-weather adventures. Crafted from a durable recycled polyester and spandex blend, these kids moisture-wicking pants keep skin dry and comfortable whether hiking, skiing, or playing outside.
- Midweight 257 g/m² fabric offers balanced insulation without bulk
- UPF 50+ sun protection base layer shields sensitive skin during outdoor play
- Soft, flatlock seams reduce chafing and enhance comfort
- Low-profile waistband ensures a snug fit that moves with your child
- Recycled materials meet bluesign® criteria for sustainability
Perfect as cheap kids thermal pants for outdoor activities, these insulated base layer pants are easy to care for—machine wash cold on a gentle cycle and tumble dry low for lasting performance. Note: not intended for sleepwear.
Anthony Owen (verified owner) –
My son loves these kids insulated base layer pants! They keep him dry and warm on every hike, and the fit is just right.
Matthew Vargas (verified owner) –
Great value for cheap kids thermal pants for outdoor activities. Durable, soft, and they wick moisture really well during skiing.
Dana Figueroa (verified owner) –
I bought these kids moisture-wicking pants for winter, and they exceeded my expectations. They’re warm but not bulky, and the UPF 50+ feature is a huge plus.