Jess & Jane Cotton tops are 100% Cotton. Easy wear and easy care. They are a baby rib knit - it is stretchy and comfortable. ***** Medium Bust/Hip 42" Length 25" : Large Bust/Hip 44" Length 25": XL Bust/Hip 46" Length 26" :1X Bust/Hip 48" Length 28" : 2X Bust/Hip 50" Length 28" : 3X Bust/Hip 54" Length 28"