Reusable and Washable. Double layer consisting of soft 160g 100% combed Cotton knit inner lining and tightly knit 180g 80% Nylon / 20% Elastane printed outer layer. Fully adjustable cotton binding tie for ultimate fit. Top and bottom edge piping for improved stability. Width – 19.5cm Height – 16cm Drawcord – 120cm Channel – 1.5cm