Gelsea 10 Inch King Size Mattress, Firm Gel Memory Foam King Mattress in a Box, Firm Back Support for Pressure Relief & Spinal Alignment, CertiPUR-US Certified, Fiberglass-Free

Upgrade your sleep experience with our premium memory foam mattress, designed with Pressure Relief Memory Foam and enhanced cooling technology for deeper, more comfortable rest. This mattress delivers full-body contouring, breathable temperature regulation, and a cleaner sleep environment with Certified Safe Materials. Convenient Bed-in-a-Box packaging allows effortless setup, while our Worry-Free After-Sales Service ensures continuous support. Ideal for all sleep positions, it’s the perfect combination of comfort, safety, and long-lasting quality.

• Healthy Firm Support: Engineered for those who prefer a solid, stable sleep surface, our firm king mattress provides the structural integrity your spine needs. It keeps your hips and shoulders level, and prevents lower back strain and morning stiffness, making it an ideal choice for anyone who enjoys balanced cushioning.
• Premium Comfort: Our king memory foam mattress contours to your body's unique curves, providing targeted relief for side, back, and stomach sleepers. By promoting optimal spinal alignment and cushioning sensitive joints, it soothes the pressure points that cause tossing and turning. Whether it is for a master bedroom, guest room, or a growing child's bed, this king size mattress ensures a restorative night without morning aches.
• Advanced Temperature Regulation: Engineered with open-cell gel infused foam and a removable and washable moisture-wicking poly-rayon cover, this king mattress creates a continuous airflow system. It pulls heat away from your body, maintaining an optimal sleep temperature—cool and refreshing in the summer, and pleasantly cozy in the winter.
• Effortless Setup: Our king memory foam mattress is compressed, rolled, and packed in a compact box for easy delivery and setup. It is compatible with different types of frames, including box springs, slatted platforms, adjustable beds, bunk beds, and even floors. Simply unbox the mattress and allow 24 hours for it to fully expand to its original shape.
• Worry-Free Sleep: At Gelsea, we do not just promise quality—we prove it. All Gelsea mattresses are CertiPUR-US and OEKO-TEX Standard 100 certified and backed by a 10-year limited warranty. All components, from the premium memory foam to the breathable fabrics, are rigorously tested for harmful chemicals and volatile organic compounds, providing you with total peace of mind.