The invention regards a flexible cover for an ultrasound device, the cover comprising polyurethane, wherein the cover is shaped as a sheath having a closed end, said shape is made by dip molding, and wherein the ultrasound attenuation is at least below 60% of the attenuation of latex, more preferably below at least 55%, 50%, 45%, 40%, 35%, or 30% below the attenuation of latex.
