Yc memory foam and pocket spring mattresses combine the best of both modern and traditional mattress technologies and have been personally selected to help ensure that you have the best possible sleeping solution using the highest quality materials to ensure the ultimate in comfort and durability 1000 pocket springs 4cm of 55d memory of which 2 cm is in the quilting 20cm overall depth 280g knit cover with viscose single needle quilting memory foam is quilted into the cover embroidered logo 3d