Silky smooth. Crazy comfort. Belgian stretch nylon is buttery smooth and second skin thin. This is the ultimate comfort bra. *411* Use this as a guide. Preference is a huge factor — if you are near the top of a size range and/or prefer more coverage, you may want to size up. *FABRIC* Belgian stretch nylon is buttery smooth and wispy thin Wide plush elastic underband for extra comfort + support Wireless 75% Polyamide (Nylon) 25% Elastane (Spandex) Machine wash warm, hang dry