Seamless construction for superior againsttheskin comfort. MicroClimate Zoning helps regulate body temperature to keep you nice.

The Boys's Integral Long Sleeve Crew from Mountain Hardwear features a Hybrid Merino Wool and polyester fabric that provides the best of both worlds: ultra-fine Merino Wool fibers provide softness and warmth, and fast-drying polyester fibers are durable and wick away sweat. Its MicroClimate Zoning construction places open mesh areas...

The Boys's Integral Long Sleeve Zip T from Mountain Hardwear features a Hybrid Merino Wool and polyester fabric that provides the best of both worlds: ultra-fine Merino Wool fibers provide softness and warmth, and fast-drying polyester fibers are durable and wick away sweat. Its MicroClimate Zoning construction places open mesh...

Ideal as a baselayer for endurance activities in cool to cold temperatures, the Patagonia Capilene 3 moves moisture effectively to keep you dry. It's brushed interior retains heat, while it's smooth jersey exterior glides easily beneath layers. The fit is contoured and sleek without being restrictive. Made from quick-wicking, fast-drying...

Patagonia's most versatile baselayer for the broadest range of temperatures, the quick-wicking Boys's Capilene 3 Midweight Crew has a brushed interior that retains heat and a smooth jersey exterior that provides superior glide for snag-free layering. The slightly fitted silhouette affords a bulk-free fit without compromising mobility. Shoulder and side...

The open, highly breathable knit and feathery weight of the Boys's Capilene 3 Midweight T-Neck from Patagonia affords unhindered airflow, excellent wicking for endurance activities in warm to moderate temperatures. Because of its low-bulk design and streamlined fit, Capilene 3 also acts an excellent layering piece during colder weather. The...

Steelhead stalker by day, film festival critic by night. For your ever-changing identities, keep the Girl's Capilene 3 Midweight Zip Neck from Patagonia handy. A cozy, snug-fitting collar and a deep zipper backed by a draft flap allows for handy internal climate control; biometric construction provides a superior, contoured fit...

Under Armour's midweight cold weather solution, the Under Armour UA Base 2.0 Quarter Zip Shirt for Boys is built for colder conditions or lower exertion activities. Moisture wicking and quick to dry, the Base 2.0 Quarter Zip has flat lock seams for all-day chafe-free comfort and ArmourBlock Technology, reducing odor...

The Under Armour Boys's Base 2.0 Midweight Long Underwear Top keeps you nice by quickly wicking moisture away from your body and gives you a tailored fit that's not too tight. This crewneck top keeps you warm If you wear it solo for a fall Path run or with a...

Built with bodying mapping Thermal Grid Base Textiles, the Under Armour Base Map Crew for Boys provides added insulation where you necessity it most and ventilation where you don't. Built with enhanced mobility and comfort, the Base Map Crew is a high-performance crew, ideal for cool weather outings, worn alone...