The standard wooden slats provide an excellent surface foundation for any platform beds, bunks, and daybeds. It adds support to any mattress type and will keep the mattress stay in good shape thus extending the life of your mattress the wooden slats made out of black spruce wood are linked to prevent movement during use and they effortlessly extend your mattress's life span and prevent sagging it will give firm bottom support for the mattress these can be avoided with the use of slats using slats doubles the mattress' life expectancy these slats is a good alternative instead of a box spring that may be too high for day beds it will give the bed a lift without adding much height these slats is strong enough to be used directly on bed frame instead of a box spring.