This encapsulated pocket sprung mattress from maxitex has been specially designed at 16cm in depth the maximum recommended height for bunk beds mid and high sleeper beds a pocket sprung mattress enables greater support and comfort as each individual spring is encased in its own fabric pocket these separate pocket springs allow more movement which in turn allows greater support for the bodythis pocket sprung mattress is also encapsulated in high quality reflex foam making the mattress hy