Good point.

This is from healthline.com:

“Your testicle is an oval-shaped, sperm-producing organ within your scrotum. The average length of a testicle is between 4.5 to 5.1 centimeters (about 1.8 to 2 inches). Testicles that are less than 3.5 centimeters (about 1.4 inches) long are considered small.”