What is the Layla Mattress cover made from? Layla December 03, 2020 21:50 Updated Follow The Layla Mattress zipper cover is made of 66% polyester, 30% viscose, 4% poly/lycra, with a ThermoGEL cooling agent. Related articles How do I order an additional or replacement cover for the Layla® Memory Foam Mattress? What Foams are used in the Layla Mattress? Can I wash the Mattress Cover? What Are the Layla Hybrid™ Mattress 10 Year Warranty Details? What is the thread count on the Layla Bamboo Sheet Set? Comments 0 comments Please sign in to leave a comment.