So here's the problem with buying a mattress online, what happens when you don't like it? More often than not you're out of luck having slept on it once to find your distaste so what now? That's where comfort guarantees come in. See, buying a mattress is subjective, there aren't really bad mattresses, only suitable mattresses. With a 40 night comfort guarantee, you have the full 40 days after delivery to determine whether the mattress you have chosen is right for you. If you find that it's not, no problem, simply call and arrange a convenient time for collection and have a new alternate mattress shipped at the same time. The 40 night comfort guarantee is changing the way customers shop for bedding online for the better.