Add some water-based lube to the realistic opening before slipping inside. Slip through the realistic, vaginal opening and let the first chamber tightly wrap around the head of your penis. Embossed with nubs that rub and massage your penis. Stroke back and forth and quarantined that the job will take you to climax. This sleeve-stroker comes with closed end to create an exhilarating suction for enhanced sensations and prolonged pleasure. Amazing tool to train and help men with premature ejaculation problems.