What does the 5 Year Warranty on the Layla Topper cover? Layla January 23, 2019 04:32 Updated Follow The Layla Topper 5 year Warranty is a non-prorated, full replacement, non-cash value 5 year warranty that covers splitting or cracking of the foam, and defects in the cover. Related articles How do I order an additional or replacement cover for the Layla Mattress? Can I wash the Mattress Cover? What's the return policy on the Layla Topper? Comments 0 comments Please sign in to leave a comment.