Craft Sportswear Women's Mix & Match Long Sleeve Base Layer Shirt: wicking/cooling/aerobics/fitness/workout/sport/athletic/underwear/top 100% Polyester Imported Tight fit baselayer item Channel-knitted fabric for optimal moisture transport and warmth Flatlock seams that follow body movement Keeps you dry and warm Craft is a Swedish brand specializing in clothing for endurance sports where performance and comfort are crucial for a good result