While the coccyx is the primary target of the seat cushions efforts to alleviate pressure, the lower lumbar area benefits from the pressure and pain alleviation provided by the back cushion. Memory foam of the highest possible quality is used in its construction, and the bottom is covered with rubber to prevent slipping. In addition to that, it features buckles and straps that can be adjusted, so preventing any sliding or movement of any type. According to Dr. Cariann Paul, a renowned chiropractor who is based in New York City is of the opinion that seat cushions can help in promoting good blood flow to the legs. This benefit is especially important for people who sit for long periods of time at work or school.