Plush iComfort Mattresses Side Sleeper Adjustable Base Compatible All Mattresses

Plush mattresses offer a soft, cushioning surface that lets your shoulders and hips sink in for pressure relief. They suit side sleepers, lighter bodies, and anyone who prefers a sink-in, hug-like feel over firm support. Compare every plush option below by brand, profile, and price.
iComfort by Serta features advanced cooling foams and gel technology that draw heat away for a cooler night's sleep. Compare every option below by feel, size, and price.
Side sleepers need a mattress that cushions the shoulders and hips while keeping the spine aligned — usually a plush to medium feel with strong pressure relief and contouring. The options below help side sleepers avoid shoulder and hip pain. Compare them by brand, feel, and profile.
These mattresses are built to flex with adjustable bed bases — bending smoothly at the head and foot without damage — so you can raise, recline, and find your ideal position. Compare every adjustable-base-compatible option below by brand, type, and feel.

Shop 200+ mattresses from Serta, Beautyrest, Sealy, Tempur-Pedic, Springwall, and Stearns & Foster at National Mattress — available in Single/Twin through King sizes from $99 to $6,640. Choose from innerspring, euro-top, memory foam, hybrid, and latex constructions in four firmness levels from extra firm to plush. Every mattress is manufactured in Canadian factories using CertiPUR-US® certified foams and ships free across Canada with a 365-night sleep trial, price match guarantee, and manufacturer warranty coverage up to 25 years.

Plush iComfort Mattresses Side Sleeper Adjustable Base Compatible All Mattresses
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  • SERTA® iComfort ECO™ Latex 13.5" Plush Memory Foam Mattress SERTA® iComfort ECO™ Latex 13.5" Plush Memory Foam Mattress brand icon
    • CoolTemp™ Cover powered by REPREVE®
    • Terra Fusion™ Memory Foam
    • iComfort® Gel Memory Foam
    • Latex Foam
    • CertiPUR-US® certified foams.
    • 100% Canada Assembled
    Queen $1,640
    Compare at $3,999
    Online availability icon In-Stock Only 7 left!
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery as soon as Tomorrow, Jun 5
    Pickup available icon Only Pickup available to
  • SERTA® iComfort ECO™ 12.5" Plush Memory Foam Mattress SERTA® iComfort ECO™ 12.5" Plush Memory Foam Mattress brand icon
    • CoolTemp™ Cover powered by REPREVE®
    • Terra Fusion™ Memory Foam
    • EverCool® Supreme Memory Foam
    • iComfort® Gel Memory Foam
    • CertiPUR-US® certified foams.
    • 100% Canada Assembled
    Queen $1,782
    Compare at $3,299
    Online availability icon In-Stock Only 4 left!
    In-Store availability icon On Display:
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  • SERTA® iComfort® 13" Plush Memory Foam Mattress SERTA® iComfort® 13" Plush Memory Foam Mattress brand icon
    • CoolFeel™ Fabric
    • 5 ZoneResponse™ Design
    • Perfect Conform™ Graphite Memory Foam
    • iComfort® Gel Memory Foam
    • CertiPUR-US® certified foams.
    • 100% Canada Assembled
    Twin XL $1,899
    Double/Full $1,999
    Queen SOLD OUT
    Compare at $3,099
    King SOLD OUT
    Online availability icon In-Stock Only 9 left!
    In-Store availability icon On Display:
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  • SERTA® iComfort® PRO 12.5" Plush Latex Mattress SERTA® iComfort® PRO 12.5" Plush Latex Mattress brand icon
    • CoolFeel™ Pro System
    • 5 ZoneResponse™ Design
    • Graphite-Infused True Response™ Latex Foam
    • True Response™ Latex Foam
    • Derived from 100% Natural Latex
    • 100% Canada Assembled
    Twin XL $2,199
    Queen $2,499
    Compare at $4,799
    King SOLD OUT
    Online availability icon In-Stock Only 9 left!
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery as soon as Tomorrow, Jun 5
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  • SERTA® iComfort® 14" Plush Memory Foam Mattress SERTA® iComfort® 14" Plush Memory Foam Mattress brand icon
    • CoolFeel™ Fabric
    • 5 ZoneResponse™ Design
    • Perfect Conform™ Graphite Memory Foam
    • Deep Reaction® Max Gel Memory Foam
    • CertiPUR-US® certified foams.
    • 100% Canada Assembled
    Twin XL $2,399
    Double/Full $2,399
    Queen $2,499
    Compare at $3,899
    King $2,999
    Online availability icon In-Stock
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery as soon as Tomorrow, Jun 5
    Pickup available icon Only Pickup available to
  • SERTA® iComfort® PRO 14.5" Plush Euro Top Latex Mattress SERTA® iComfort® PRO 14.5" Plush Euro Top Latex Mattress brand icon
    • CoolFeel™ Pro System
    • 5 ZoneResponse™ Design
    • 2X Graphite-Infused True Response™ Latex Foam
    • 2X True Response™ Latex Foam
    • Derived from 100% Natural Latex
    • 100% Canada Assembled
    Twin XL $2,799
    Queen SOLD OUT
    Compare at $5,299
    King $3,899
    Online availability icon In-Stock Only 9 left!
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery as soon as Tomorrow, Jun 5
    Pickup available icon Only Pickup available to
  • SERTA® iComfort® PRO 12.5" Plush Latex Mattress SERTA® iComfort® PRO 12.5" Plush Latex Mattress brand icon
    • CoolFeel™ Pro System
    • 5 ZoneResponse™ Design
    • Graphite-Infused True Response™ Latex Foam
    • True Response™ Latex Foam Core
    • Derived from 100% Natural Latex
    • 100% Canada Assembled
    Twin XL $5,399
    Queen $5,999
    Compare at $8,899
    King $6,999
    Online availability icon In-Stock
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery as soon as Tomorrow, Jun 5
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  • OPEN BAG - SERTA® iComfort® 14" Plush Memory Foam Mattress - King OPEN BAG - SERTA® iComfort® 14" Plush Memory Foam Mattress - King brand icon
    • CoolFeel™ Fabric
    • 5 ZoneResponse™ Design
    • Perfect Conform™ Graphite Memory Foam
    • Deep Reaction® Max Gel Memory Foam
    • CertiPUR-US® certified foams.
    • 100% Canada Assembled
    King $1,294
    Compare at $4,499
    Online availability icon In-Stock Only 2 left!
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery as soon as Tomorrow, Jun 5
    Pickup available icon Only Pickup available to
  • SERTA® iComfort ECO™ Latex 13.5" Plush Memory Foam Mattress - Queen SERTA® iComfort ECO™ Latex 13.5" Plush Memory Foam Mattress - Queen brand icon
    • CoolTemp™ Cover powered by REPREVE®
    • Terra Fusion™ Memory Foam
    • iComfort® Gel Memory Foam
    • Latex Foam
    • CertiPUR-US® certified foams.
    • 100% Canada Assembled
    Queen $1,640
    Compare at $3,999
    Online availability icon In-Stock Only 7 left!
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery as soon as Tomorrow, Jun 5
    Pickup available icon Only Pickup available to
  • SERTA® iComfort ECO™ 12.5" Plush Memory Foam Mattress - Queen SERTA® iComfort ECO™ 12.5" Plush Memory Foam Mattress - Queen brand icon
    • CoolTemp™ Cover powered by REPREVE®
    • Terra Fusion™ Memory Foam
    • EverCool® Supreme Memory Foam
    • iComfort® Gel Memory Foam
    • CertiPUR-US® certified foams.
    • 100% Canada Assembled
    Queen $1,782
    Compare at $3,299
    Online availability icon In-Stock Only 4 left!
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery as soon as Tomorrow, Jun 5
    Pickup available icon Only Pickup available to
  • SERTA® iComfort® 13" Plush Memory Foam Mattress - Twin XL SERTA® iComfort® 13" Plush Memory Foam Mattress - Twin XL brand icon
    • CoolFeel™ Fabric
    • 5 ZoneResponse™ Design
    • Perfect Conform™ Graphite Memory Foam
    • iComfort® Gel Memory Foam
    • CertiPUR-US® certified foams.
    • 100% Canada Assembled
    Twin XL $1,899
    Compare at $2,799
    Online availability icon In-Stock Only 7 left!
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery as soon as Tomorrow, Jun 5
    Pickup available icon Only Pickup available to
  • SERTA® iComfort® 13" Plush Memory Foam Mattress - Double/Full SERTA® iComfort® 13" Plush Memory Foam Mattress - Double/Full brand icon
    • CoolFeel™ Fabric
    • 5 ZoneResponse™ Design
    • Perfect Conform™ Graphite Memory Foam
    • iComfort® Gel Memory Foam
    • CertiPUR-US® certified foams.
    • 100% Canada Assembled
    Double/Full $1,999
    Compare at $2,999
    Online availability icon In-Stock Only 2 left!
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery as soon as Tomorrow, Jun 5
    Pickup available icon Only Pickup available to

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