Hanes - Boy's X-Temp Thermal Underwear Set, X-Temp technology adapts to temperature, environment and activity to keep you cool and dry for all day comfort, Flat no rub seams, Soft waffle thermal knit fabric, Ribbed cuff ankles, Sturdy seams, Size X-Small = 2-4 Small = 6-8 Medium = 10-12 Large = 14-16 X-Large = 18-20, 60% Cotton 40% Polyester, Made in India, #41045 * FLAT NO RUB SEAMS - Smooth against your skin to help prevent chafing * SOFT WAFFLE THERMAL KNIT FABRIC WITH A COMFORTABLE RIB KNIT CUFFS - Provides comfortable warmth and stretch to keep their shape * SHRINKAGE CONTROLLED - For lasting size and shape retention * STURDY SEAM CONSTRUCTION - Provides strength and durability About Us We are a 4th generation family business founded in 1947.