It's actually a cosmetic product; since 2004, Penuma has offered a medical grade silicone implant for your penis to increase both length and girth. The FDA-cleared aesthetic implant increases flaccid length and girth by 1 to 2 inches on average, with varying results.6 Apr 2021
How much does Penuma increase size?
Results: In the 400 patients, the implantation of the Penuma silicone implant increased midshaft circumference from an average of 8.5 ± 1.2 cm to 13.4 ± 1.9 cm (56.7% increase; P < . 001). A 2-category improvement in self-confidence and self-esteem was noted in 83% of patients 6-8 weeks postoperatively.