The Aspire Furniture 20.5cm deep Double Comfort Eco is a bonnell sprung mattress containing double comfort layers and an air conditioned Aspire cool touch luxury sleeping surface, making for an excellent value budget mattress The mattress is available from single to king size. Sprung: Features a Bonnell sprung open coil system, 20.5cm depth and double comfort fillings for a superior night of sleep. Air conditioned: The air conditioned fabric is their own trademarked fabric design, which is more breathable than standard mattress fabric. It allows air to flow allowing warm air to be pushed out of the mattress when you move. Cool touch: Plus an aspire-cool touch diamond tile sleep surface. Made in the UK: Made in the UK and delivered rolled.