ElementDigital Wooden Beaded Car Seat Cushion, Massage Lumbar Back Support Cool Car Mount Seat Back Support, Breathable Mesh Ice Silk Design Used in Summer Auto Accessories (Marroor) Using high-end dedicated line beaded, it is durable. Product Material: Ice silk & Maple wooden beads. Applicable models: Universal type. Relieve back pain while driving and sitting. Keep you cool and comfortable, and provide you massage effect while driving or sitting.