What is the mattress size for king size mattress?

King-size mattress is the best choice for a master bedroom measuring at least 11 feet by 11 feet. The wider sleeping space ensures minimal disturbances when your sleeping partner changes sleeping postures frequently or takes intermittent breaks during a single sleep episode. You can also get a split option in King-size mattress, in which two mattresses measuring 72” by 36” are placed side by side. Splitting would help couples when they have different mattress preferences for sleep comfort and body support. With enough space, each partner can have his/her own mattress to sleep properly, while being on the same bed.