Fabric 90% Polyester 10% SpandexFleece LinedQuick-DryMoisture-Wicking4-Way StretchHeat Retention DEVOPS Women's Thermal Baselayer Series Thermal Turtle Neck Long Sleeve Shirts DEVOPS Women's long sleeve thermal shirts are made with micro-fleece fabric to give the ultimate warmth during the cold weather seasons. Please refer to the size chart to choose your size.If you are having trouble choosing a size, Please refer to other customers size feedback. Fleece Lined Fabric Thermal Tech Fleece Fabric provide enhanced warmth and heat insulation. Flexibility The 4-way Stretch delivers excellent elasticity and durability for maximum mobility. Basic Design Designed for cold weather season casual. Heat Retention Converts moisture to heatIncreases warmth and blood flow Women's Thermal Underwear Long Johns Sets Women's Thermal Long Johns Leggings Pants Women's Thermal Long Sleeve Shirts Women's Thermal Turtle Long Sleeve Shirts Boys and Girls Thermal Underwear Long Johns Set Boys Thermal Compression Tights Fleece Lined Pants Material Polyester 90%, Spandex 10% (Fleece Lined) Polyester 90%, Spandex 10% Polyester 90%, Spandex 10% Polyester 90%, Spandex 10% Polyester 90%, Spandex 10% Polyester 90%, Spandex 10% Packing Top & Bottom SET 2 Pack 2 Pack 2 Pack Top & Bottom SET 2 Pack Men's Thermal Underwear Set with Fleece Lined Men's Thermal Compression Pants Men's Thermal Compression Pants Men's Thermal Long Sleeve Compression Shirts Men's Thermal Turtle Mock Neck Shirts Men's Thermal Turtle Mock Neck Shirts Material Polyester 90%, Spandex 10% Polyester 90%, Spandex 10% Polyester 90%, Spandex 10% Polyester 90%, Spandex 10% Polyester 90%, Spandex 10% Polyester 90%, Spandex 10% Packing Top & Bottom SET 2 pack 2 pack 2 pack 2 pack 2 pack