Dormeo offers a handy 60-nights trial on selected mattresses. If after 60 nights of sleeping on a Dormeo mattress, you decide you’re not happy with it, you can return it for a full refund or exchange it for a different model. The 60-night comfort guarantee doesn’t apply to Dormeo Options mattresses, WellSleep, pillows, duvets, protectors and selected toppers. Anything bought in the clearance is also exempt.