Sleep Studio 3-Inch ViscO2 Active Green Tea Memory Foam/Latex Comfort Wave Mattress Topper, Cal King For California king mattress, breathable 3-inch ViscO2 Active memory foam/latex hybrid topper; natural green tea additive for pleasing aroma Combines 3-pound density, open-cell memory foam and supportive latex for maximum sleeping comfort; with plant-based ingredients 3-zone ventilation for greater air flow and cooler sleep temperatures; pressure point relief with 1-sided comfort wave surface design Spot clean only Made in the USA, topper measures 82 inches long by 70 inches wide by 3 inches high; limited manufacturer warranty