At Casper, we believe in better living through better sleep for everyone. Our mattresses do not have a weight limit and are designed to support all shapes and sizes.
As with nearly all new products, there may be a slight break-in period. Depending on how much weight your mattress is supporting, it may sleep a little softer or firmer - but the fundamental feel will remain the same.
That said, we always recommend using your mattress on a firm, flat, supportive base such as a platform bed or sturdy wooden slats, at least 2.5 inches thick and 2.5 inches apart, in order to ensure its longevity.
Rotating the mattress every 3 to 5 months is incredibly helpful to even the wear and tear on the surface. Since Casper mattresses are comprised of foam, the cells will break down over time and with use, and rotating helps maintain the overall support and feel.