This is an assertive device for flirting especially. Made from medical grade material, this device is non-toxic,reaches international health standards and gets several international certifications. It could make the penis longer and thicker effectively and increase the females pleasure while making love. It is a good weapon to help a man to be a warrior on the bed through prolonging the time of sex and preventing premature ejaculation. The material is senior silicone and has not smell. It's suggested to wash it in water before sex, and keep it in a dry condition and not in sunshine. The penis sleeve can be used on a vibrator also. Specifications: Material: TPR Length: 18cm Diameter: 3.5cm Net weight: 110g