• Medium Firm
  • On Sale
  • Suitable For Adjustable Base
  • Motion Separation
  • Cooling Technology
  • Edge Support
  • Hand Crafted

Overview

Glacier Original Hybrid Medium Firm Mattress 12" Twin

The Glacier Original Hybrid Medium Firm Mattress 12" is a hybrid mattress built for the sleeper who runs warm and wakes up stiff. This is a medium firm mattress for back pain relief that addresses two of the most common reasons people stop sleeping well: a surface that traps heat and a support core that can't hold the lumbar in place overnight. Glacier engineered this one from the cover down with cooling and alignment as the lead priorities, not afterthoughts. If you've been close to buying a quality hybrid but couldn't justify the price, this is the one worth a serious look. Stop by any Mancini's Sleepworld location and a sleep specialist will put it alongside every competing option so you can feel the difference for yourself.

COMFORT AND FEEL: Medium firm with a controlled, cradling feel and lift-not-sink lumbar support.

SIZE: This twin sized mattress is a smart fit for a solo sleeper in a smaller bedroom or guest room who wants serious cooling technology without oversizing.

BEST SLEEP MATCH: Best for back sleepers and combination sleepers who want a medium firm hybrid mattress twin with enough give to relieve pressure but enough firmness to keep the spine honest through the night.

BEST FOR: Ideal for sleepers who overheat at night, need targeted lower back support, or wake up feeling like they barely moved.

CONSTRUCTION SPECIFICATIONS: The glacierTECH° quilted cover is cool to the touch from the first moment you lie down. CarbonICE graphite-infused memory foam beneath it actively pulls heat away from the lumbar zone while relieving pressure where your body is heaviest. ARCFlow® foam adds ventilated cushioning that lets air keep moving through the comfort layers. Individually wrapped coils underneath reinforce the edges and maintain steady airflow through the base. The foams are CertiPUR-US® certified.

SETUP AND COMPATIBILITY: This mattress arrives rolled and compressed, expands within hours, and needs no tools. Compatible with adjustable bases, platform frames, and box springs with proper foundation support.

NOT A FIT FOR: Dedicated side sleepers who prefer a plush or pillowtop feel may find the medium firm profile firmer than expected at the shoulder and hip.

YOUR SLEEP, BACKED BY US

At Mancini's Sleepworld, every mattress purchase comes with a 120-night comfort guarantee through our Rest Easy Promise, so you have real time to know if this is the right bed. Add a premium mattress protector at the time of purchase and you can extend that to a full 365 nights. You'll also get our Best Price Guarantee, free next-day delivery, in-home professional setup, and flexible financing. Prefer to feel it first? Come try it in any of our stores before you buy.

  • SleepMatch: blue
Blue color code are mattresses of medium firm support. Most back sleepers and some side sleepers will find the beds measured as blue are best for them. Find Your Match

Glacier Original Hybrid Medium Firm Mattress 12"

Price reduced from MSRP  $998.00 to Save 40% $599.00
Total $599.00
Item No. GLA-ORI-3M-MF-26
  • Built to sleep cool without giving up support
  • CarbonICE graphite memory foam targets lumbar heat buildup
  • Individually wrapped coils keep airflow moving beneath you
  • ChiroZONE quilting lifts and aligns the lower back zone
  • Durable base layer resists shifting and early wear
Availability:
  • This item is currently not available
Total $599.00

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Overview

Glacier Original Hybrid Medium Firm Mattress 12" Twin

The Glacier Original Hybrid Medium Firm Mattress 12" is a hybrid mattress built for the sleeper who runs warm and wakes up stiff. This is a medium firm mattress for back pain relief that addresses two of the most common reasons people stop sleeping well: a surface that traps heat and a support core that can't hold the lumbar in place overnight. Glacier engineered this one from the cover down with cooling and alignment as the lead priorities, not afterthoughts. If you've been close to buying a quality hybrid but couldn't justify the price, this is the one worth a serious look. Stop by any Mancini's Sleepworld location and a sleep specialist will put it alongside every competing option so you can feel the difference for yourself.

COMFORT AND FEEL: Medium firm with a controlled, cradling feel and lift-not-sink lumbar support.

SIZE: This twin sized mattress is a smart fit for a solo sleeper in a smaller bedroom or guest room who wants serious cooling technology without oversizing.

BEST SLEEP MATCH: Best for back sleepers and combination sleepers who want a medium firm hybrid mattress twin with enough give to relieve pressure but enough firmness to keep the spine honest through the night.

BEST FOR: Ideal for sleepers who overheat at night, need targeted lower back support, or wake up feeling like they barely moved.

CONSTRUCTION SPECIFICATIONS: The glacierTECH° quilted cover is cool to the touch from the first moment you lie down. CarbonICE graphite-infused memory foam beneath it actively pulls heat away from the lumbar zone while relieving pressure where your body is heaviest. ARCFlow® foam adds ventilated cushioning that lets air keep moving through the comfort layers. Individually wrapped coils underneath reinforce the edges and maintain steady airflow through the base. The foams are CertiPUR-US® certified.

SETUP AND COMPATIBILITY: This mattress arrives rolled and compressed, expands within hours, and needs no tools. Compatible with adjustable bases, platform frames, and box springs with proper foundation support.

NOT A FIT FOR: Dedicated side sleepers who prefer a plush or pillowtop feel may find the medium firm profile firmer than expected at the shoulder and hip.

YOUR SLEEP, BACKED BY US

At Mancini's Sleepworld, every mattress purchase comes with a 120-night comfort guarantee through our Rest Easy Promise, so you have real time to know if this is the right bed. Add a premium mattress protector at the time of purchase and you can extend that to a full 365 nights. You'll also get our Best Price Guarantee, free next-day delivery, in-home professional setup, and flexible financing. Prefer to feel it first? Come try it in any of our stores before you buy.

Features

  • Suitable For Adjustable Base
  • Motion Separation
  • Cooling Technology
  • Edge Support
  • Hand Crafted
  • SleepMatch: blue
Blue color code are mattresses of medium firm support. Most back sleepers and some side sleepers will find the beds measured as blue are best for them. Find Your Match
Glacier Original Hybrid Medium Firm Mattress 12" image number

Glacier Original Hybrid Medium Firm Mattress 12"

Price reduced from MSRP  $998.00 to Save 40% $599.00
Price reduced from MSRP  $998.00 to Save 40% $599.00
Twin


  • Cooling Comfort Zoned Pillow Top: glacierTECH cooling fibers instantly cool you, allowing for maximum airflow and moisture wicking to stay cool, dry, and comfortable all night long. Patented ChiroZONE quilting gives extra support and durability in the lumbar zone area.
    Responsive Feel + Edge Support: Hundreds of individually encased coils move independently, reducing motion transfer and adding airflow for cool comfort and restorative sleep. Two rows of thicker coils featured at the long edges of the bed provide reinforced support.
  • Glacier Original Hybrid Medium Firm Mattress 12"
    Cooling Comfort Zoned Pillow Top: glacierTECH cooling fibers instantly cool you, allowing for maximum airflow and moisture wicking to stay cool, dry, and comfortable all night long. Patented ChiroZONE quilting gives extra support and durability in the lumbar zone area.
    Responsive Feel + Edge Support: Hundreds of individually encased coils move independently, reducing motion transfer and adding airflow for cool comfort and restorative sleep. Two rows of thicker coils featured at the long edges of the bed provide reinforced support.

Features

  • SKU: GLA-ORI-3M-MF-26
  • MPN: M6159-3/3
  • GTIN: 810090802459
  • Brand: Glacier
  • Collection: Original
  • Type: Hybrid
  • Mattress In A Box: Yes
  • Firmness: Medium Firm
  • Height: 12
  • Length: 75
  • Width: 38
  • Shipping Height: 18
  • Shipping Width: 48
  • Shipping Length: 18
  • Warranty: Lifetime Limited
  • Weight Capacity: 500
  • Cover Material: GlacierTECH° quilted cover with cool to the touch fibers 
  • Quilting Layers: Ultra HD quilting foam
  • Comfort Layers: Gel infused memory foam, ventilated gel foam, zoned graphite memory foam
  • Support System: 465 individually wrapped coils with edge support

Specification

  • Suitable For Adjustable Base: Yes
  • Motion Separation: Yes
  • Cooling Technology: Yes
  • Edge Support: Yes
  • Hand Crafted: Yes