2 Piece Set Top and Bottom Ladies Ski Long Johns Thermal Underwear 55% Cotton and 45% Thermal Polyamide Polyester non iron, cold wash, tumble dry. wash with like color One long sleeved vest with round neckline and woven in, shiny stripes One Long Johns with elastic waistband extra flat seems for maximum comfort Feature hand-feel softness with excellent breathability and mositure management for maximum comfort. Two-layer dual-tex premium knit construction for maxium warmth during winter sports or outdoor activities Few Customer commented that product "Runs big". Please consider one size samller if you normally wear slim fit. The size measurement allows for possible shrinkage.