Because we use premium materials and components, we do not have a strict weight limit for our mattresses, including our Eco Organic Kids Mattress. We design them to support a lot of weight. We recommend no more than 350 pounds per person, or 700 pounds total. Obviously, heavier sleepers require better structural support, and are best served when their mattress is reinforced by a solid foundation or platform and a sturdy frame.
Box springs are not recommended for heavy sleepers. If slats are used on a bed frame, the spacing between them should be minimal. With heavier sleepers, regularly rotating the mattress from head-to-toe will also encourage more uniform wear.