Many of the mattresses that are on sale from the top brands like Serta, Simmons, Sealy and so-on are capable of supporting heavier individuals. However, you'll find reviews that suggest that some are better than others. For example, the Sealy Posturepedic mattress has received a lot of positive feedback due to its sturdy and durable construction.

The core or foundation of the mattress is what contributes greatly to its ability to support heavy people. Like many products, you often get what you pay for. Higher quality mattresses are usually at the higher end of the price scale, so if you buy cheap, bear in mind that long-lasting support may not be one feature that's guaranteed.