We offer a 10-year warranty for the base mattress and 1 year for the comfort top layer. As for comfort top, Ru9 understands that each person has a different body structure and sleeping habits, so to help you find the right comfort, we apply 100 nights of sleep testing exclusively for comfort top. With in 100 nights experience the mattress, you can require to change the softness of comfort top, Ru9 team will come to your home, replace and remove the unsuitable comfort top, free of charge.