Egg freezing is an assisted reproductive technique. It is known as mature oocyte cryopreservation and allows a woman to preserve her eggs for later use. It is a very useful method to save a woman's ability to get pregnant in the future. In this method, the eggs of the woman are extracted from the ovaries, and are frozen and stored to be used later. Egg freezing is a safe and helpful procedure especially for women who are not planning for pregnancy presently and want to preserve their fertility.