King Koil Riverton Lux Firm Mattress

Description

Firm, responsive, and refreshingly supportive—crafted for aligned, energized sleep.

The Riverton Lux Firm delivers a lifted, supportive feel that keeps your body aligned and comfortable all night. A breathable quilt adds softness, while cooling latex helps ease tension and prevent heat buildup. Responsive micro coils enhance contouring and reduce motion transfer, and the firm, stable surface offers dependable support without feeling too rigid. What sets the Riverton apart is its firmer, more supportive feel with added cooling benefits—making it a strong “better” option within the King Koil lineup for sleepers who want stability without sacrificing comfort.

Best for back and stomach sleepers who prefer a firm, cool, and reliably supportive sleep surface.

• Comfort Level: Firm
• Handmade in the USA
• Sleep Style: Back and Stomach Sleepers
• Mattress Type: Innerspring with latex, micro coils, natural fibers & plush foams
• Adjustable Base Compatible: Yes
• Benefits: Elevated firm support, cooling graphite latex, targeted micro-coil responsiveness, pressure relief, motion isolation, and reinforced edge stability
• Sustainability: CertiPUR-US® certified foams, eco-friendly Tencel® panel, breathable natural fibers, and handcrafted construction for long-lasting performance
• Quilt: A firm, breathable, temperature-regulating surface for stable comfort.
  • Tailormade Tufting™ for handcrafted durability
  • Silk–wool blend for moisture control and natural cooling
  • Antimicrobial Safeguard FR fibers for freshness
  • Plush quilt foams for gentle cushioning
  • Four-way stretch knit with Tencel® for cooling airflow
  • Tricot backing for added structure
• Pillow Insert:
  • 1" Plush Graphite Talalay Latex for breathable pressure relief
  • 1" Medium Graphite Talalay Latex for firmer, responsive support
• Comfort Layers:
  • 1" Zoned Micro Coils (2000 total) for adaptive, motion-isolating support
  • 1" Cotton Topper for natural softness and breathability
• Support System:
  • 8" ContourFlex™ Encased Coil System (825 coils) for stable, full-body support
  • Excellent Edge™ Foam Encasement for perimeter strength
  • 1" Balanced Base Foam for foundational durability
• Recommended Foundation: Rio 2.0 Adjustable Bed Base | City Mattress
• Warranty: 10 Years Non-Prorated
• Dimensions:
  • Twin Size: 38" W x 75" D x 15” H; 81 lbs.
  • Twin XL Size: 37" W x 80" D x 15” H; 83 lbs.
  • Full Size: 53" W x 75" D x 15” H; 98 lbs.
  • Queen Size: 60" W x 80" D x 15” H; 105 lbs.
  • Split Head Queen Size: 60" W x 80" D x 15” H; 105 lbs.
  • King Size: 76" W x 80" D x 15” H; 126 lbs.
  • Split Head King Size: 76" W x 80" D x 15” H; 126 lbs.
  • California King Size: 72" W x 84" D x 15” H; 130 lbs.