Try to find out the material composition and care requirements of coccyx gel seat cushions. If the cushion is made of foam or air, their maintenance would be different. Find out what suits you and make a decision. Brands like Ergo21 also offer travel ease seat cushions with the state-of-the art LiquiCell technology, which is based on water-filled membranes. This layer distributes the pressure evenly and lets your body glide.