Buoyant Affinity Sofa Bed Using a design created by one of the world s top bed makers Silentnight & manufactured under licence by the UK s leading sofa company Buoyant Upholstery a fresh & innovative line of modern sofa beds have been created to provide you with unsurpassable comfort that s as reliable by night as it is by day The Buoyant Affinity Sofa Bed is available in a choice of two options Affinity Deluxe featuring a Miratex foam mattress for outstanding comfort combined with a Posture Zone foam centre to provide extra support to the areas of your body that need it most Affinity luxury featuring Memory foam which moulds to your body shape providing supreme cushioning & comfort as well as profiled foam Posture Zone which provides extra support to the areas of your.. .