... in producing pocket spring mattress,double pillow top mattress,tempur Mattress,beach mattress,luxury mattress The inner structure of this item of mattress as below ... polyester3.Inner latex on top : 2.5 cm 4. Pocket spring : 18 cm (H), wire guage : 2.0mm, with 5 ... -proof insect-resistant ventilation design, ensure the internal mattress cleanly and sanitation.15.imported materials from Belgium with ...