Crystal condom is made of silicone and with extra dots, this condom is washable and resuable. Do not use this product for anything other than its intended purpose. If used otherwise, the responsibility lies with the user.
This material may not be as effective against STIs as latex, but users often report that Labrador India Transparent Reusable Silicone Condom feel much more natural and skinlike than either latex or other latex-alternative condoms. These tend to be considerably more expensive than latex condoms.
Never use 2 condoms together, whether that's 2 male condoms or a female and a male condom. They'll rub against each other, and this friction can weaken them and make them more likely to break or fail.