Get a restful and relaxing night sleep after a full tiring day by selecting this amazingly designed hyder checkers mattress that is benefited from 135 gauge open coil spring unit with high tensile wire for increased performance having soft firmness the helical wire joins all individual springs that are placed in rows this spring unit is benefited from steel rod support that brings an extra stability to the mattress this sumptuous mattress is further modified by the double comfort layers