- Tight Knitted Square Neck Short Sleeve T shirt - Soft & Medium weight stretch Rib Knit - Women's top with very soft fabric. Style number: BT5480 Fabric Details: 95% Polyester 5% Spandex The material is very comfy and the touch is soft. Perfect to wear in casual, daily, and school. 95% of customers are satisfied with its softness, fit, and easiness to match.