Star River Hybrid Medium King Mattress w/Low Foundation by Serta

Serta Perfect Sleeper
Star River Hybrid Medium King Mattress w/Low Foundation by Serta

$1,899

Was $1,999
Available After August 26, 2026
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Measurements

76" W x 80" D x 18.5" H
194 cm W x 204 cm D x 47 cm H

76" W
18.5" H
80" D
SKU KGL753301

Available Sizes

Colors

  • White
  • Blue

Features

  • Comfort Level: Medium
  • Mattress and base height: 18"
  • Cool Twist®: Gel Memory Foam Boosts Airflow, Pulls Heat Away, and Contours for a Cooler Sleep
  • Mattress Type: Hybrid
  • Lumbar Support
  • 5 Zoned Comfort: Zoned Feel for Targeted Body Support
  • EverCool® Supreme High-density Memory foam for Pressure Relief and Support.
  • Q4™ Support System: 4-in-1 Coils for Even Support
  • Mattress Warranty: 10 years
  • Wool Fiber Layer: Breathable Natural Fiber Layer for Added Comfort
  • One-Sided Mattress
  • Adjustable Base Compatible
  • BestEdge® Foam Encasement
  • CoolFeel™ Fabric
  • Foundation: Long-lasting Support and Mattress Durability
  • Latex Free
  • Low Motion Transfer
  • Reinforced Center Support

Materials

  • EverCool® Supreme Memory Foam
  • BestEdge™ Foam Encasement
  • Cool Twist® Gel Memory Foam
  • CoolFeel® Plus Fabric
  • Q4™ Support System
  • Serta® Balanced Base Support
  • Serta® Balanced Support Foam
  • Wool Fiber

Description

The Perfect Sleeper Star River 13.5" Hybrid Medium King Mattress with Low Foundation combines a spacious sleep surface with balanced medium comfort, responsive hybrid support and a lower-profile foundation. The 5 Zoned Comfort construction provides targeted body support, while the Q4™ Support System promotes even support. Cool Twist® and EverCool® Supreme High-density Memory Foam add conforming pressure relief, complemented by reinforced edge and center support.

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