Eco-Friendly King Size Hybrid Mattress - Breathable & Medium Firm

12-Inch Hybrid Comfort

Experience unparalleled comfort on the Oliver & Smith 12-inch Hybrid Mattress King. Designed with three layers—comfort foam, high-density foam, and Bonnell coil springs—this mattress seamlessly blends premium cooling foam and responsive spring support, offering unmatched comfort and support. Available in white and gray, our medium-firm mattress ensures a blissful night’s sleep, helping you wake up rejuvenated each morning.

Bonnell Spring Support

Elevate your sleep experience with our 12-inch king size mattress featuring Bonnell coil springs. This design ensures unparalleled durability and bounce, making it perfect for beds that require medium-firm support. The 6-inch thick high-density memory foam further enhances comfort by providing excellent motion isolation, ensuring a peaceful night’s sleep.

Breathable & Eco-Friendly

Enjoy sustainable comfort with our king size hybrid mattress in a box. This design incorporates a breathable polyester cover and eco-friendly foam construction, making it Green Foam Certified. Our hybrid mattress not only provides comfort and support but also promotes sustainable practices, reducing waste, pollution, and greenhouse gas emissions.

Effortless Setup

Order with peace of mind knowing your new king mattress arrives compressed and rolled for easy setup. Simply unroll, and watch as the king foam mattress expands to its full 12-inch size, quickly delivering the perfect blend of comfort and medium-firm support. Our memory foam mattress ensures you wake up each morning feeling refreshed and revitalized.

10-Year Warranty

At King Mattress Firm, we prioritize your comfort and satisfaction. That’s why we offer a robust 10-year warranty on our hybrid king mattresses. Our commitment is backed by happy customers, guaranteeing sound sleep every night. If you’re not satisfied with your 12-inch hybrid king mattress in a box, contact us, and we'll address any issues to ensure you have a peaceful sleep every night.