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 What Are the Layla Hybrid™ Mattress 10 Year Warranty Details? What Foams are used in the Layla Mattress? What is the Layla Mattress 120 Night Trial? What are the Dimensions and Weights of the Layla Mattress? Comments 0 comments Please sign in to leave a comment.