LxWxH it is 28ft2

4 ft

A California king is 7-8 ft and 5-6 ft. A regular king is 6 inches shorter on both ends

When your mattress grows too old to use, the upcoming purchase can be daunting, and sometimes you may try to prolong its inevitable discarding. Using mattress toppers or a protector is good to use to prolong your mattress life, but not when it's nearing its end. If your old mattress is already showing signs of aging and reducing your sleep quality, a mattress topper won't work a miracle. However, a mattress topper is an excellent mattress accessory upgrade when installed on a new mattress or a while after purchase. You may have the best mattress, but if it has lost its capabilities over time, there's not much you can do except discard it.