100% polyester rib fabric is a textured, stretchable knit featuring raised vertical ribs, ideal for collars, cuffs, and activewear due to its durable elasticity and shape retention. Known for wrinkle resistance, quick drying, and colorfastness, it offers lightweight comfort with a soft yet resilient feel. The ribbed structure enhances breathability and flexibility, making it suitable for sportswear, underwear, and casual apparel. Advanced variants may incorporate recycled polyester or functional treatments like UV resistance and flame retardancy. Machine-washable and low-maintenance, it balances performance and practicality for everyday and athletic use.