National bed sheet that prevents wetness from leaking onto the bed mattress. Sheets consist of two cotton layers and an insulating layer. Single use. Can be used for children, people with special needs, the elderly, and the disabled. Bed sheets are suitable for changing wounds after operations (sterilizing them and changing gauze and adhesive). Suitable for use in cases of nocturnal enuresis in children. Suitable for home use, clinics, and hospitals. Size 60x90. Carton of 150 sheets.