the Fat Boy Thin Large Stretchy Extender from Perfect Fit is made from a Silicone-TPR blend called Silaskin, which gives it an unbelievable stretch factor and a makes it very comfortable to wear. Whilst adding comfortable girth to your penis and making it feel huge for a partner, the inner nubs and ribs and soft feeling make it perfect for masturbation too. This product is not compatible with latex products. Not a contraceptive or a substitute for a condom. Wash thoroughly with soap and water after use.