Kingsdown Onyx Sleep Firm Mattress
Sleep deeply and well-supported with the handcrafted softness of Kingsdown’s Onyx Sleep Firm Innerspring Mattress, made in the USA from premium materials. Topped with gel fibers for a soft feel and resilience, the firm gel quilting foam below promotes luxuriously cooling comfort alongside an extra layer of pressure-relieving firm gel foam. The individually wrapped coils within the innerspring system deliver personalized, full-body support and minimal motion transfer, while ultra-strong perimeter coils reinforce the edge for 100-percent surface usage.
- Made in the USA
- Comfort: Firm
- Gel Fiber: Micro-denier polyester fiber provides a resilient and exceptionally soft feel.
- Firm Gel Quilt Foam: Provides extra luxurious cooling comfort with a firmer feel.
- Firm Gel Foam: Comfort layer of cooling and resilient gel foam enhances pressure point relief.
- Wrapped Coil Innerspring System: High coil count innerspring system with individually wrapped springs to contour to the body and provide personalized support while minimizing partner disturbances.
- Perimeter Coils: Firm coils on all sides for edge support.
- Made with CertiPUR-US® Certified foams.
- Twin Size Dimensions: 39″ W x 75″ D x 11.5” H
- Twin XL Size Dimensions: 39″ W x 80″ D x 11.5” H
- Full Size Dimensions: 54″ W x 75″ D x 11.5” H
- Queen Size Dimensions: 60″ W x 80″ D x 11.5” H
- King Size Dimensions: 76″ W x 80″ D x 11.5” H
- Cali King Size Dimensions: 72″ W x 84″ D x 11.5” H
- Adjustable friendly innerspring mattress
- Certified by the Sleep to Live Institute® to deliver proper postural support.
- Experience next-level personalized support by adding our City Mattress Rio 2.0 Adjustable Bed Base
- Warranty: 10 year
