Need a solution to sheet hoggers? Then you have to get the Couple 100% cotton bedsheets which have a ruler printed on the top edge which tells each partner how much he or she can pull or how much space they are alloted. The printed numbers are such that you can also read them when tucked in your bed.
The designers are Isabel Machado and Filipe Pinto of Designwise by Experimenta. They say the Couple bedsheets can not only be a monitoring system but a game. Perhaps that's why the number colours range from cool to warm colours as a means of rating bed activities?