Metway Women's Silk Long Johns Snug Fit Silk Thermal Underwear Sets Ultra soft,breathable,absorption and Comfortable,Antistatic and inhibiting bacteria function of silk fabrics,conducive to human health Applied a new size for US on October 10, 2017 to improve the previous evaluation of Asian size, please choose according to the new size details as below(inches) Small size:Top: Bust-35-37"/ Length: 23",Pants outseam: 38" Medium size:Top: Bust-37-39" /Length: 24",Pants outseam: 39" Large size:Top: Bust-39-43"/ Length: 24",Pants outseam: 40"