Medium Mattresses Innerspring Mattresses Compatible with Adjustable Bed Base | Flex‑Friendly Foam, Latex & Hybrid Temperature‑Regulating Mattresses | Year‑Round Comfort & Balance Serta Mattresses

Medium-firmness mattresses — often called medium-firm — sit right between plush and firm, which is why they're the most popular and versatile feel we carry. You get enough cushioning to relieve pressure with enough support to keep your spine aligned, making medium a safe choice for back sleepers, combination sleepers who change positions through the night, and couples who need a compromise between two preferences. Shop medium models from Sealy, Serta, Beautyrest, Stearns & Foster, iComfort and Tempur-Pedic across memory foam, hybrid, euro-top, pillow-top and tight-top builds — with free delivery across Canada. • Feel: medium sits between plush and firm — balanced and the most versatile of our four comfort levels • Also called "medium-firm" — the middle of the firmness scale • Best for: back sleepers, combination sleepers, couples, and most body types • Consider plush if you sleep on your side; firm if you sleep on your stomach or want more support • Constructions: euro-top, tight-top, pillow-top, memory foam and hybrid • Brands: Sealy, Serta, Beautyrest, Stearns & Foster, iComfort, Tempur-Pedic, Springwall & NM • Prices: from $171 to premium
Innerspring mattresses use a coil support system for a responsive, bouncy feel with strong airflow that sleeps cool. They deliver reliable edge support and a classic "on top of the bed" feel at an accessible price — a fit for back, stomach, and combination sleepers. Compare every innerspring option below.
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.
Temperature-regulating mattresses balance heat and airflow to hold a neutral, consistent sleep temperature through the night — not too hot, not too cold. They suit sleepers whose temperature swings. Compare every option below by brand, type, and feel.

Serta is a globally recognized mattress brand celebrated for its comfort-first designs and sleep innovations. With over 90 years of experience, Serta continues to deliver quality mattresses that Canadians can trust.

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.

Medium Mattresses Innerspring Mattresses Compatible with Adjustable Bed Base | Flex‑Friendly Foam, Latex & Hybrid Temperature‑Regulating Mattresses | Year‑Round Comfort & Balance Serta
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  • SERTA® Classic® 12.5" Medium Euro Top Mattress SERTA® Classic® 12.5" Medium Euro Top Mattress brand icon
    • 800 Edition Custom Support Coil System
    • 3 Zone Body Support + Serta® Support Gel Foam
    • Cool Twist® Gel Memory Foam + Serta® PillowSoft® Foam
    • Serta® Anti-Microbial Fibre Technology
    • Serta® Best Edge® Foam Encasement
    • Designed and Made in Canada
    Single/Twin $657
    Twin XL In stock for fast delivery $703
    Double/Full $713
    Queen In stock for fast delivery $754
    Compare at $1,799
    King $922
    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 12
    Pickup available icon Only Pickup available to
  • SERTA® Perfect Sleeper® Premium 14" Medium Firm Tight Top Mattress SERTA® Perfect Sleeper® Premium 14" Medium Firm Tight Top Mattress brand icon
    • 1000 Series 3-Zoned Coil System
    • CoolFeel Fabric™
    • Serta® Antimicrobial Fibre
    • Cool Twist® Gel Memory Foam
    • Serta® Support Foam
    • Designed and Made in Canada
    Single/Twin $910
    Twin XL In stock for fast delivery $960
    Double/Full $975
    Queen $1,026
    Compare at $2,099
    King $1,191
    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 12
    Pickup available icon Only Pickup available to
  • SERTA® Perfect Comfort X™ 14" Medium Firm Euro-Top Mattress SERTA® Perfect Comfort X™ 14" Medium Firm Euro-Top Mattress brand icon
    • 1250 Series 5 ZoneActive™ Pocket Coil System
    • Perfect Conform™ Graphite Memory Foam
    • CoolFeel Fabric™
    • QuiltLoft™ Memory Foam
    • PerfectPure™ Fibre
    • Designed and Made in Canada
    Twin XL In stock for fast delivery $1,149
    Double/Full $1,149
    Queen $1,199
    Compare at $3,199
    King $1,499
    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 12
    Pickup available icon Only Pickup available to
  • SERTA® Classic® 12.5" Medium Euro Top Mattress - Single/Twin SERTA® Classic® 12.5" Medium Euro Top Mattress - Single/Twin brand icon
    • 800 Edition Custom Support Coil System
    • 3 Zone Body Support + Serta® Support Gel Foam
    • Cool Twist® Gel Memory Foam + Serta® PillowSoft® Foam
    • Serta® Anti-Microbial Fibre Technology
    • Serta® Best Edge® Foam Encasement
    • Designed and Made in Canada
    Single/Twin $657
    Compare at $1,599
    Online availability icon Backorder Available
    In-Store availability icon On Display:
    Estimated delivery icon Estimated free delivery on Tuesday, Jun 30
  • SERTA® Classic® 12.5" Medium Euro Top Mattress - Twin XL SERTA® Classic® 12.5" Medium Euro Top Mattress - Twin XL brand icon
    • 800 Edition Custom Support Coil System
    • 3 Zone Body Support + Serta® Support Gel Foam
    • Cool Twist® Gel Memory Foam + Serta® PillowSoft® Foam
    • Serta® Anti-Microbial Fibre Technology
    • Serta® Best Edge® Foam Encasement
    • Designed and Made in Canada
    Twin XL In stock for fast delivery $703
    Compare at $1,699
    Online availability icon In-Stock Only 3 left!
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery as soon as Tomorrow, Jun 12
    Pickup available icon Only Pickup available to
  • SERTA® Classic® 12.5" Medium Euro Top Mattress - Double/Full SERTA® Classic® 12.5" Medium Euro Top Mattress - Double/Full brand icon
    • 800 Edition Custom Support Coil System
    • 3 Zone Body Support + Serta® Support Gel Foam
    • Cool Twist® Gel Memory Foam + Serta® PillowSoft® Foam
    • Serta® Anti-Microbial Fibre Technology
    • Serta® Best Edge® Foam Encasement
    • Designed and Made in Canada
    Double/Full $713
    Compare at $1,699
    Online availability icon Backorder Available
    In-Store availability icon On Display:
    Estimated delivery icon Estimated free delivery on Tuesday, Jun 30
  • SERTA® Classic® 12.5" Medium Euro Top Mattress - Queen SERTA® Classic® 12.5" Medium Euro Top Mattress - Queen brand icon
    • 800 Edition Custom Support Coil System
    • 3 Zone Body Support + Serta® Support Gel Foam
    • Cool Twist® Gel Memory Foam + Serta® PillowSoft® Foam
    • Serta® Anti-Microbial Fibre Technology
    • Serta® Best Edge® Foam Encasement
    • Designed and Made in Canada
    Queen In stock for fast delivery $754
    Compare at $1,799
    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 12
    Pickup available icon Only Pickup available to
  • OPEN BAG - SERTA® Perfect Sleeper® Premium 14" Medium Firm Tight Top Mattress - Twin XL OPEN BAG - SERTA® Perfect Sleeper® Premium 14" Medium Firm Tight Top Mattress - Twin XL brand icon
    • 1000 Series 3-Zoned Coil System
    • CoolFeel Fabric™
    • Serta® Antimicrobial Fibre
    • Cool Twist® Gel Memory Foam
    • Serta® Support Foam
    • Designed and Made in Canada
    Twin XL In stock for fast delivery $845
    Compare at $1,999
    Online availability icon In-Stock Only 1 left!
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery as soon as Tomorrow, Jun 12
    Pickup available icon Only Pickup available to
  • SERTA® Perfect Sleeper® Premium 14" Medium Firm Tight Top Mattress - Single/Twin SERTA® Perfect Sleeper® Premium 14" Medium Firm Tight Top Mattress - Single/Twin brand icon
    • 1000 Series 3-Zoned Coil System
    • CoolFeel Fabric™
    • Serta® Antimicrobial Fibre
    • Cool Twist® Gel Memory Foam
    • Serta® Support Foam
    • Designed and Made in Canada
    Single/Twin $910
    Compare at $1,999
    Online availability icon Out Of Stock
    In-Store availability icon On Display:
  • SERTA® Classic® 12.5" Medium Euro Top Mattress - King
    BEST IN CLASS TOP RATED LIMITED STOCK
    SERTA® Classic® 12.5" Medium Euro Top Mattress - King SERTA® Classic® 12.5" Medium Euro Top Mattress - King brand icon
    • 800 Edition Custom Support Coil System
    • 3 Zone Body Support + Serta® Support Gel Foam
    • Cool Twist® Gel Memory Foam + Serta® PillowSoft® Foam
    • Serta® Anti-Microbial Fibre Technology
    • Serta® Best Edge® Foam Encasement
    • Designed and Made in Canada
    King $922
    Compare at $2,199
    Online availability icon Backorder Available
    In-Store availability icon On Display:
    Estimated delivery icon Estimated free delivery on Tuesday, Jun 30
  • SERTA® Perfect Sleeper® Premium 14" Medium Firm Tight Top Mattress - Twin XL SERTA® Perfect Sleeper® Premium 14" Medium Firm Tight Top Mattress - Twin XL brand icon
    • 1000 Series 3-Zoned Coil System
    • CoolFeel Fabric™
    • Serta® Antimicrobial Fibre
    • Cool Twist® Gel Memory Foam
    • Serta® Support Foam
    • Designed and Made in Canada
    Twin XL In stock for fast delivery $960
    Compare at $1,999
    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 12
    Pickup available icon Only Pickup available to
  • SERTA® Perfect Sleeper® Premium 14" Medium Firm Tight Top Mattress - Double/Full SERTA® Perfect Sleeper® Premium 14" Medium Firm Tight Top Mattress - Double/Full brand icon
    • 1000 Series 3-Zoned Coil System
    • CoolFeel Fabric™
    • Serta® Antimicrobial Fibre
    • Cool Twist® Gel Memory Foam
    • Serta® Support Foam
    • Designed and Made in Canada
    Double/Full $975
    Compare at $1,999
    Online availability icon Out Of Stock
    In-Store availability icon On Display:

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