What is a good size follicle for fertilization?

A good size follicle for fertilization typically measures between 18-24 millimeters in diameter. This size indicates that the egg contained within the follicle is mature and ready for ovulation. Follicles of this size are typically monitored through ultrasound imaging during fertility treatments to determine the best time for fertilization. Additionally, the presence of a mature follicle of this size is a good indicator of a healthy and viable egg for fertilization.