These tire lights are very easy to attach to the tire. They just screw onto the valve stem. They also act as a cap, so they will keep the air in, just as the normal cap does. They also come with the femal attachment, depending on how the attachment is for where you are putting them.
I think these are great. They are easy to use, long lasting, bright, and fun. We are buried knee deep in snow, but as soon as it melts I'll get some great action shots on here. Your kids will really love these. Check them out on Amazon.
**I received this in exchange for my review.**