Memory foam layer: Contours to your body shape and stops you feeling the springs. Hybrid mattress: A next generation memory fibre mattress, get the best of both worlds with a hybrid mattress (medium soft firm). Innerspring system: Offers the sturdy feeling of a traditional sprung mattress. Hypoallergenic: Antibacterial with anti-dust mite filling. Sizes: Small Single, Single, Small Double, Double and King. Made in the UK: Manufactured with pride in the UK. Hybrid Mattress | Blue | Single | Living Social