Another type of cushion is the inflatable coccyx cushion that is filled with air to the firmness of your desired comfort. One of the best advantages of using the inflatable coccyx cushion is that you can deflate it and can carry it with you wherever you go. The firmness of the inflatable coccyx cushion would depend on the amount of air in it and, when you find it to be more comfortable with less air inside the cushion, you may deflate it to the firmness of your choice. The downfalls of using this type of coccyx cushion is that it may not be as durable (you can easily poke a hole in it) and this is only intended for short term use.