NOTE: These work for both cloth or leather seats. Purchase 1 set for $75 or 2+ for $60 each. These Liquicell Gel units utilize thin gel pad cells which are designed to increase long-term seating comfort due to reduced and even elimination of occupant fatigue, numbness, fidgeting and tail burn. These ultra-thin cells contain a liquid that is in constant motion allowing the body to glide or float with the seat to distribute the pressure more evenly across the seat cushion. The Liquicell Gel Pads are very thin which means that there are no physical modifications required for your seat as they can easily be installed in between the factory foam and upholstery in most vehicles. Each set comes with 6 pads, 4 for the cushion and 1 for each bolster. Make sure that the horizontal placement is symmetrical and evenly placed across the cushion so that pressure is evenly distributed.