And they have a very bad reputation for breakage. Sheep skin condoms have certainly been around longer than latex, and they are perfect for some people, even though they are quite expensive. But we don't carry them because they only offer protection from pregnancy, and not HIV and STD's. The natural membrane allows osmosis of viruses, etc., to occur. So if a couple is only concerned about contraception and not disease, and are perhaps allergic to latex, the sheep skin condoms may be the way to go.
Some men say also that the natural condoms allow for more sensitivity.
An alternative for you is to use a scented latex condom, such as the Kiss of Mint, or a flavored lubricated condom. And now you can buy just the ones you need in loose packs of 12 of the same, and save money, too. Safer Sex Choices for Women, does not carry anything but latex men's condoms. Just remember never to use an oil-based lube with a latex condom, and that a condom must fit properly and be put on correctly in order to be as effective as possible. A First of all, a lot of guys don't know what size latex condom they prefer, either, but they feel embarrassed to buy a bunch of different boxes in the store to try them out.