This mattress inner spec as below: Knitted fabric Memory foam, high density foam Pocket ... spring T,F,Q,K can be compressed This item mattress is ... insect-resistant ventilation design, ensure the internal mattress cleanly and sanitation15. Imported materials from France ... productShow(); oProductShow.init( { 'aImgSrc': aBigImageSrc } ); } )(); high quality compressed mattress