The Kingsdown Prime Rosenberry collection provides luxury sleep at an exceptional value. Featuring consistent, edge-to-edge support, the Prime Rosenberry Firm Hybrid Mattress combines additional layers of comfort added just beneath the luxury cooling cover with the active support of finely tuned coils. The firm hybrid level is for those who seek active postural support with a luxurious level of pressure-relieving comfort and cushioning. And with Kingsdown, you can depend on handcrafted quality, undeniable comfort and over 115 years of sleep innovation you won’t find anywhere else. All Kingsdown mattresses are made-to-order. HANDCRAFTED EXCELLENCE AND UNDENIABLE COMFORT SINCE 1904. For over a century, the Kingsdown name has been synonymous with unprecedented quality. Every detail is considered, and we ensure superior material selection and perfection, right down to the last stitch of our renowned tailoring. Handcrafted in the United States, each mattress is tested and certified before it leaves our hands to ensure consistent, superior quality and accurate, refined support. Since 1904, we’ve never compromised on comfort, and neither should you.