- Solid Rib Knit Square Neck Long Sleeve Top - Soft & Medium weight stretch Rib Knit - Women's top with very soft stretchy fabric. Style number: BT5487 Fabric Details: 95% Polyester, 5% Spandex The material is very comfy and the touch is soft. Square neck and crop top style makes you more slim and attractive. Perfect to wear in casual, daily, and school. 85% of customers are satisfied with its softness, fit, and easiness to match.