Understatment's signature Feather Lace Scalloped lace cups in a plunge shape neckline Soft microfiber side wings with semi-flexible ribs for extra support & coverage Soft but firm elastic underband with microfiber covering for increased support Flat shoulder straps with metal adjusters Adjustable hook & eye closure at the back Adjustable hook & eye closure at the back Soft silicon care label = no itchy tags 84%POLYAMIDE 16%ELASTANE