Sofa bed mattresses fall into five main types: standard foam, memory foam, open coil sprung, pocket sprung and hybrid, plus click clack designs that use the seat cushions instead of a separate mattress. Foam mattresses are light and fold easily, memory foam moulds to the body, sprung mattresses feel closer to a conventional bed and hybrids combine springs with foam layers. The right type depends on how often the bed is used, who sleeps on it and how much the mattress needs to fold.<\/p>\n
Understanding the differences makes it much easier to compare designs, because two sofa beds that look identical when closed can feel completely different once opened. Our range of modern sofa beds UK<\/a> lists the mattress type and depth for each model, and every one sits within our broader collection of sofas UK sale<\/a> designs.<\/p>\n A sofa bed mattress has a job a standard mattress never faces: it has to fold, often more than once, and live inside a frame under the seat cushions. That limits its thickness and affects what it can be made from. Mattresses that are too thick will not fold away, while those that are too thin can let you feel the frame underneath.<\/p>\n Because of this, sofa bed mattresses are usually thinner than the mattress on a main bed. The quality of the materials, rather than sheer depth, decides how comfortable they feel. If you want to compare with standard bed mattresses, our modern mattresses UK sale<\/a> show how construction changes when folding is not a factor.<\/p>\n Standard foam mattresses are made from polyurethane foam, sometimes in a single block and sometimes in layers of different densities. They are light, fold easily and are found on many fold out sofa beds.<\/p>\n The density of the foam matters most. Higher density foam is firmer, more supportive and less likely to develop dips over time. Lower density foam feels softer at first but can compress more quickly with regular use. Foam mattresses tend to suit occasional guests and children, and they are easy to air and turn.<\/p>\n Some foam mattresses use reflex foam, which springs back quickly and has a slightly bouncy feel. This is a good everyday choice for guests who prefer a firmer surface.<\/p>\n Memory foam softens with body heat and moulds to the shape of the person lying on it. On a sofa bed, it is usually used as a top layer over a firmer foam base. That combination gives pressure relief where you need it and support underneath.<\/p>\n Memory foam is good at masking the feel of the frame, which is one of the most common complaints about sofa beds. It can feel warmer than other foams, and it responds slowly, so some sleepers find it harder to turn over. For a fuller comparison, our guide to memory foam mattresses on UK sofa beds<\/a> explains when it makes the biggest difference.<\/p>\n An open coil mattress has a grid of springs connected by wire, wrapped in padding. These are among the more traditional sofa bed mattresses and feel familiar to anyone who has slept on a sprung bed.<\/p>\n Open coil mattresses give an even, slightly springy feel and allow air to move through, which helps keep them cool. Because the springs are linked, movement on one side can be felt on the other, so they suit single sleepers better than couples. They are generally heavier than foam and fold less easily, so they appear more often on larger fold out frames.<\/p>\n Pocket sprung mattresses have individual springs sewn into fabric pockets, so each one moves independently. This gives more targeted support and reduces movement between two people sharing the bed.<\/p>\n On a sofa bed, pocket springs usually need to be shallower than on a standard mattress so the mattress can still fold. They feel closer to a proper bed than most other options, which makes them a sensible choice where the sofa bed is used regularly or for longer stays.<\/p>\n A hybrid mattress combines a sprung core with foam or memory foam comfort layers on top. The springs give support and airflow, while the foam smooths out the surface and adds pressure relief.<\/p>\n Hybrids aim to give the best of both approaches, but they add weight and some thickness. Check that the sofa bed mechanism is designed for the mattress it comes with, as a hybrid that is too deep for its frame can make the bed harder to close.<\/p>\n Click clack sofa beds do not have a separate mattress. The seat and back cushions fold flat to form the sleeping surface. Comfort depends on the quality of the cushion foam and how evenly the two sections meet.<\/p>\n These are simple, compact and quick to set up. They work well for children, short stays and rooms where there is little space for a fold out frame. Adding a foam topper can make a noticeable difference to comfort for adult guests.<\/p>\n Mattress depth is one of the clearest indicators of comfort, but it is not the only one. A thinner mattress of dense, good quality foam can feel better than a thicker one made from softer materials. Look for the depth in the product details, and compare it with the materials used.<\/p>\nWhy Sofa Bed Mattresses Are Different<\/h3>\n
Standard Foam<\/h3>\n
Memory Foam<\/h3>\n
Open Coil Sprung<\/h3>\n
Pocket Sprung<\/h3>\n
Hybrid Mattresses<\/h3>\n
Click Clack and Cushion Beds<\/h3>\n
Depth, Firmness and Support<\/h3>\n