The Mattress itself is not split if you buy a king.,
The foundation comes in 2 pieces (which are actually 2 Twin XL sizes....) if you want a 'king split mattress' you would need to order 2 twin XL mattresses ....
Otherwise the king mattress is in one piece...
The height of the mattresses from top to bottom includes the regular height foundation but not the bedframe.... is approx 25"
It comes down to feel .. The latex will be a bit firmer and have more a push back feel with resilience
The Gel Visco is going to have a softer more sink in feel and feel more plush..;. the gel is like a cool memory foam
Thank you for shopping at Sears and have a great day!
Date published: 2015-02-15