A device for treatment of premature ejaculation or stimulation of a male organ includes an elastic sleeve mounted within a housing, at least one aperture formed on the elastic sleeve, and at least one liquid-absorbing member held between the housing and the elastic sleeve over the at least one aperture. The at least one liquid-absorbing member is adapted to soak up a liquid with a temperature higher or lower than the body temperature of a user and deliver the liquid through the at least one aperture and into the elastic sleeve when the at least one liquid-absorbing member is squeezed by a male organ of the user frictionally moving to-and-fro inside the elastic sleeve, thereby stimulating the male organ and reducing the sensitivity thereof.