Upgrade your sleep with our Split California King mattresses: 36" x 84" each side, designed for adjustable bases and personalized comfort. Perfect for couples, this size lets each sleeper choose their ideal firmness while reducing motion transfer for undisturbed rest. Crafted with premium materials and advanced support systems, our split Cal King mattresses deliver exceptional durability, spinal alignment, and cooling comfort. Shop the perfect Split California King mattress for better sleep, tailored to you.