Cool Blue Memory Foam Spring MattressMattress Features Promotes a long lasting freshness and cooler night sleep 13. 5 Open Coil Bonnell spring to last years to come Four way stretch fabric Micro Quilted Sleep Surface Mattress depth is approx 9 10" (25cm) Responsive 40KG M3 Cool Blue Memory Foam Dust Mite Resistant & Hypo Allergenic Contours to your body's natural shape Relieves points across the body Medium Comfort Rating Suitable for any UK type of standard size bed base May come vacuum