Queen Size Mattress
The normal size of a queen size mattress is:
Queen size mattress - 76 x 80 inches (or 198 x 203 centimeters)
California Queen size mattress - 72 x 84 inches (or 182 x 213 centimeters)
Queen size mattress is wider and larger than ordinary double size mattress and extra double size mattress. From the number of beddings, queen size mattress can hold six pillows: two huge ones, two large ones, a half-large one and a small and square one.
As for comfort, you can roll over the bed without the fear of falling.