Open the cap and dispense a few drops of lube in the masturbator for best results. Condoms are not necessary, but are recommended for better hygiene. Clean cup afterwards by turning the sleeve inside out and washing with toy cleaner. Rinse thoroughly. Store at room temperature. Product dimensions: 7.87in. x 6.46in. Product weight: 15.17 oz Product diameter: 1.97in. Waterproof: Yes Phthalate free: Yes Materials: TPE