Gonad power graces this fab ovary keychain. The ovaries produce eggs and release sex hormones estrogen and progesterone, which control all kinds of biologically female reproductive mayhem from period regulation to babymaking. The two ovaries take turns releasing eggs down the fallopian tubes for possible fertilization. Gland and gonad all in one! The engraved back of the keychain and cardboard display both say: "Ovary: Ova Achiever." Zinc alloy with soft enamel, polybagged. Ovary part of keychain measures 2" x 1.73". Designed in the US, made in China. I Heart Guts happy organs put a smile on your face and smarts in your brain! Our adorable organs make the perfect gift for everything from a broken heart to a tummy ache. Get your feet wet in anatomy or bone up on your physiology with our nerdy plush toys! I Heart Guts is the brainchild of an anatomically obsessed illustrator who loves internal organs and all they do. Founded in 2005, our bare-bones family operation strives to offer plush organs with love, style and geeky puns. I Heart Guts plush organs were named Best of Toy Fair by Popular Science magazine in 2014.