... mattress,vacuum packed mattress economic mattress with good quality compressed packing mattress mattress We are ... Pocket Cushion Spring, Sofa Spring, Seat Spring, furniture spring,, Zigzag spring, etc. in China more ... with hight carbon steel wire , line uses Lura-Flex, which is the bestoffset design spring system available ... mattress. 3) High density soft foam,can bring you good sleep quality, and reduce ...