The sponge is a round piece of white plastic foam with a little dimple on one side and a nylon loop across the top that looks like shoelace material. It's pretty small--just two inches across--and you insert it way up in your vagina before you have sex. The sponge works in two ways: It blocks your cervix to keep sperm from getting into your uterus, and it continuously releases spermicide. Think of it like a bouncer at the nightclub door to your uterus.
The Gist
No hormones, no prescription, and can be inserted up to 24 hours before sex.
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