Sleep Science 12" iFlip Sonoma Memory Foam Mattress with Adjustable Power Base 5-layer 2-sided Mattress offers dual comfort levels: Medium Soft and Medium Firm; Enhanced Airflow system created by the Opti-Air Memory Foam and Air Channel Base; Adjustable base including isolated power Pillow-Tilt function

Four-Layer Foam Construction: Breathable Open-Cell Foam, High-Density Memory Foam, Zoned Transition Foam, And Durable Support Foam; Resilient Coils for Airflow and Support; Hand-Sewn Cooling Cover; Ships in a Conveniently Compact Box

Sleep Science 12" iFlip Sonoma Memory Foam Mattress with Adjustable Power Base 5-layer 2-sided Mattress offers dual comfort levels: Medium Soft and Medium Firm; Enhanced Airflow system created by the Opti-Air Memory Foam and Air Channel Base; Adjustable base including isolated power Pillow-Tilt function

Novaform 14” ComfortGrande Advanced Gel Memory Foam Mattress Infused with Phase Change Gel for Temperature Regulation; Soothing Cool EVENcor GelMAX™ Memory Foam; Maximum Support from Extra Thick Design; Plush Quilted Cover with Upgraded Cooling; Easy Moving Sturdy Side Handles

Sleep Science 12" iFlip Sonoma Dual Comfort Memory Foam Mattress 5-Layer 2-Sided Mattress Offers Dual Comfort Levels: Medium Soft and Medium Firm; Enhanced Airflow System Created by the Opti-Air Memory Foam and Air Channel Base; Bed Frame Pictured is Not Included

Triple-Layer Medium Mattress With Responsive LURAcor™ Foam; Removable, Machine Washable Moisture-Wicking Cover; Copper-Infused Foam; Premium Memory Foam Offers Pressure-Relieving Support; Mattress Only. Bed Frame, Pillows and Accessories Not Included

Juniper Kids Mattress, Twin, 2-pack Includes 2 Twin Size Mattresses; Perfect For Bunk Beds; Medium-Firm Feel. 6-inch Height; Made With CertiPUR-US Foams Free Of Flame Retardants, Heavy Metals, Formaldehyde, And Phthalates; Layer Of Gel Memory Foam Provides Personalized Support And Cooling Comfort

Four-Layer Foam Construction: Breathable Open-Cell Foam, High-Density Memory Foam, Zoned Transition Foam, And Durable Support Foam; Resilient Coils for Airflow and Support; Hand-Sewn Cooling Cover; Ships in a Conveniently Compact Box

Costco also has gel memory foam mattresses, which have an added cooling effect. For truly personalized comfort, we have adjustable mattresses . This luxurious choice offers customizable support, and can adapt to almost any sleeping, sitting, or reclining position.

Browse Costco’s expansive selection of king mattresses, which can be conveniently filtered by brand, firmness, and composition, Whether you’re looking for a luxuriously plush pillow top, body hugging ultra-firm support, or responsive multi-layer memory foam, you’ll find …