Please measure your waistline(1 inch above navel),then refer to the left Size Chart Picture, if any ideas,pls contact us first & We're always here to serve you.^ This waist training vest is made of high polyester and spandex soft fabrics,which are smooth,healthy,moisture wicking,elastic and stretchable,flexible and breathable,comfortable to wear.^ The zipper corset is equipped with 3 rows of hook and eye closure & 2 adjustable shoulder straps,to ensure you could fit it at most extenet,and give you a sexy natural curve.^ Special front U-type anti-droop design makes your chest more erect and attractive,effectively firm control armpit & back flabby fat to make your body no lumps or bumps or bulks,make you a beautiful hourglass figure.^ Our body shaper helps postpartum recovery all process,reduce swelling,tighten skin,control tummy & back,relief postnatal pain,ease transition of uterus and shrink it down to normal size,make your maternity body get back to its original shape.^ The shapewear can flatten abdomen,reduce waistline,support back,postpartum recovery,improve posture,relief waist pain,protect spine,expedite fat burn while exercise,combined with a healthy lean diet and drink plenty of water for weight loss.^