The mattress egg shell has hundreds of rounded contours which evenly spread body pressure and allow you to sleep in comforT. The ripples let the air circulate to keep you cool and stop pressure on your more bony areas. The combination of our most popular mattress topper and high density orthopedic foam base create this medium firm mattress with no sag and ultimate bounce back. Length of Mattress is 190cmWidth of Mattress is 91cmHeight of mattress is 16cm