- Ribbed Slit Neckline Sleeveless Romper - Soft & Light weight High stretch Rib Knit - Women's romper with very soft stretchy fabric. Style number: BP5534 Fabric Details: 92% Polyester, 8% Spandex The material is very comfy and the touch is soft. Sleeveless and slit neckline makes you more slim and sexy. Perfect to wear in casual, daily, and vacation. 86% of customers are satisfied with its softness, fit, and stretchability.