It's great quality and thick, so it can easily support the weight of 2 adults. Not sure the best way to describe the material, but it's more of a plastic mesh. Don't get me wrong it is comfortable, but it isn't a soft fabric the way my last one was.  It doesn't get super hot in the sun, and the pillow is the right size and shape.  In terms of durability, I think it will hold up longer than the fabric kind.