Featuring 1000 my pro pocket springs the extra comfort 1000 mattress offers superior comfort and support whilst myedge support prevents roll off this is a no turn mattress which requires only periodic rotationthis mattress is nbf approved and comes with a 5 year guaranteeplease note spring count refers to a 5ft kingsize modeldimensionssingle w 92cm x l 192cm x d 29cmsmall double w 122cm x l 192cm x d 29cmdouble w 137cm x l 192cm x d 29cmking w 152cm x l 202cm x d 29cmsuperking w 182