Sheets often need washing more regularly than duvets for that reason grobag have produced an additional fitted bottom sheet to use with the grobag first duvet bedding set it has all the features of the first duvet bedding sets sheet attached pillowcase zips to attach to the duvet and the secure under bed fitting white spare fitted bottom sheet with integral pillow case for use with the grobag nursery stay on bedding and sheet set 100 woven cotton available in cot bed and single bed size