The open, highly breathable knit and feathery weight of Patagonia's Capilene 3 Midweight Bottoms for Girl affords unhindered airflow, excellent wicking for endurance activities in moderate to cold temperatures and it's Patagonia's fastest-drying Capilene. Because of its low-bulk design and streamlined fit, Capilene 3 also acts an excellent layering piece...

A stop-and-go pace, like that of alpine climbing or backcountry riding, can leave you with the shivers. Stay warm and dry with the Patagonia Merino 2 Bottoms for Boys, lightweight baselayer bottoms built with Patagonia's most versatile merino weight. Built for an active lifeDesign in warm to cool weather, Merino...

No necessity to cut your old capilene long undrwear to avoid calf pinch from your ski boots. The Smartwool Midweight Boot Top Bottoms for Boys come pre cut and ready to shred and durable wool makes them warm for years to come.

Great for forays into alpine environments, the SmartWool Boys's Microweight Bottoms surround your legs in comfort and performance with next-to-skin custom fitting, a covered elastic waistband, and flatlock seams. SmartWool 100% jersey knit Merino wool that has tiny air pockets providing an insulating layer of natural air, is the Great...

The Boys's Warm Tights from The North Face provides excellent thermal Safe guardion for low to medium intensity activities in cold weather.

Under Armour's most versatile relaxed fit UA Base legging. Ideal for cooler conditions and a variety of activity levels. Mid-weight ColdGear grid fabric construction provides exceptional temperature control and moisture transport via heat-trapping interlocking channels.Under Armour's most versatile relaxed fit UA BASE legging.

Under Armour Boys's Base 2.0 Three Quarter Pants

Built with bodying mapping Thermal Grid Base Textiles, the Under Armour Base Map Leggings for Boys provide added insulation where you necessity it most and ventilation where you don't. Built with enhanced mobility and comfort, the Base Map Leggings area high-performance baselayer ideal for cool weather outings.

For colder conditions and higher activity levels, the Under Armour Boys's Basemap 2.5 Leggings are Built for extreme and midweight layering. Offering ArmourBlock technology for superior odor suppression as well as strategic ventilation to keep you nice, this performance base layer delivers maximum mobility and a Strengthive fit during cold...

Out with the old and in with the new. Go beyond your typical long johns and enjoy temperature control comfort in the GoLite Drimove BLU-2 Baselayer Bottoms for Boys. Built with Minerale moisture wicking, quick dry fabric, the Drimove Baselayer Bottoms are ultra-soft and provide unbeatable next-to-skin comfort.