What size throw fits your sofa or bed? Drag it and see

Is your throw too small for the sofa, or so big it swamps the bed? The right size is simple geometry, and you can see it before you buy anything.

Enter your sofa back or bed width, pick a throw size, then drag the throw around to see how much it covers, how far it hangs and what it looks like. Includes common throw sizes in cm, what to measure and when to break the rules.