These kids' thermal base layer pants have 4-way stretch for a comfortable fit. The Acclimate Dry hydrophobic polyester fibers of these kids' long underwear bottoms work to transport moisture away from the skin to keep you warm and dry. These kids' thermal base layer pants are relaxed fit for everyday comfortable use. 100% polyester Four-way stretch for comfortable fit Acclimate Dry polyester fibers manage moisture effectively Gusset eases movement and reduces seam bulk Flat seam construction for durability Midweight warmth, relaxed fit Imported Order today!