Natori Women's Sleeveless Scoop Neck Relaxed Fit Lounge Dress The perfect combination of ease and comfort, this relaxed fit Natori lounge dress is a flattering classic. Designed for staying in or stepping out the fabric moves with you while being medium weight, soft, and breathable. A Flat measurement from armpit to armpit for size L: 20". Material: 95% Polyester, 5% Spandex