. Stretch terry towelling fitted undersheet. Quality & value. Featuresâ¢Â 250g/m 2.â¢Â 80% cotton bouclé towelling on 20% polyurethane-coated polyester.â¢Â Waterproof & micro-breathable.â¢Â With Sanitized anti-bacterial treatment for enhanced hygiene.â¢Â Stretch elasticated jersey flaps. â¢Â Machine washable at 60°C.â¢Â Treated with active biocide.