Under Armour Boys ColdGear® Leggings, Youth Base Layer Thermal Underwear for Kids' Fitness, Winter Running Tights Black

Lightweight warmth: These boys thermal leggings are the weight of a t-shirt yet bring amazing warmth in cold weather while wicking away sweat 4-way stretch construction: The base layer tights are made using 4-way stretch fabric for flexibility and free movement during workouts Dual-layer fabric: The baselayer bottoms have ultra-warm, brushed fabric inside and a smooth, fast-drying exterior for heat and dry comfort Versatile clothing: These thermal pants can be worn to run or work out, but are also comfortable to wear under clothes as long johns Material and Fit: The streamlined leggings aren't too tight or loose with an inseam of YMD is 25" (+/- 1.5" per size) and made of 87% Polyester and 13% Elastane