Innerspring Mattresses

Prime Glencastle Cushion Firm Mattress

Purchase Option

Kingsdown offers over 150 different sleep solutions and we know selecting your new mattress is an important decision.  Take the guesswork out of mattress shopping! 

Our advanced process is designed to gather your unique physical data - such as height, weight distribution and pressure points - and determine the best mattress for your body.  Please use our bedMATCH diagnostic tool to determine what type of Kingsdown is best for you:  

Once you have your color (Gold, Green, Red or Blue) we can assist you in finding the best new model.

The Kingsdown Prime collection provides luxury sleep at an exceptional value.  The Prime Glencastle Cushion Firm (BLUE) incorporates advanced features like tri-zoned coil support and foam infusions for enhanced comfort.  Handcrafted in the Unites States, each mattress is tested and certified before it leaves our hands to ensure consistent, superior quality and accurate, refined support.  Kingsdown luxury sleep - exquisitely designed and handcrafted since 1904. 


Type: Innerspring Mattress

Support Level: Cushion Firm

Mattress Height: 14.5"


Mattress Specifications:

  • Soft, Fresh Comfort® Quilt faced with cooling gel fibers on the surface of the mattress maintains ideal body temperature throughout the night
  • Tri-Tech Gel Infused Memory Foam combines the cushioning benefits of gel with the antimicrobial and cooling properties of graphite, silver and copper for cooler, fresher sleep.  This responsive layer alleviates pressure points along the body, particularly for the shoulders and hips
  • Airflow Latex responds to each of the body's contours to provide the ultimate in pressure relief and supportive comfort
  • Firm Comfort Flex Gel Foam provides cushioning pressure relief from head to toe
  • Tri-Zoned Support System with Posturized Center Support.  This innerspring unit works in three zones.  Each coil is individually wrapped to contour to the body and provides personalized support for both sleep partners.  Posturized center support targets the lumbar area to deliver firm lower back support, exactly where it's needed most
  • Certified by the Sleep to Live Institute to deliver proper postural support
  • Handcrafted in the USA
  • Adjustable Base Compatible
  • All Kingsdown products feature CertiPUR-US® Certified Foam


Kingsdown luxury sleep — exquisitely designed and handcrafted mattresses since 1904. Undeniable comfort and postural support combine for restorative sleep. 

Coil Count:

  • Twin - 456 coils
  • Twin XL - 492 coils
  • Full - 662 coils
  • Queen - 800 coils
  • King - 1002 coils
  • California King - 996 coils

We are proud to offer a 100-night sleep trial for all mattresses sold on .  If you’re not completely satisfied, you may exchange or return your mattress within 100 calendar days, from the date of delivery, free of charge. To qualify for this offer, all mattresses must be clean and undamaged.  Damage includes, but is not limited to: stained fabrics, punctures, rips, tears, abrasions or burns.  The 100-night sleep trial is only valid on mattresses and is limited to one exchange.  Offer not available on foundations, pillows, sheets or mattress protectors.

Premium White Glove Service:

Each order is custom made and handcrafted just for you. Our premium white glove service agents will contact you directly to arrange factory-direct shipping to your home.  A certified, professional team will arrive with your new sleep set, and you’ll enjoy the superior service that you deserve and expect from Kingsdown.


Warranty: 10 years


Standard production time: 10 business days.

Premium white glove delivery service varies depending on scheduling.


FREE WHITE GLOVE SERVICE on all innerspring mattress orders.*

*Ready to ship in 10 business days.  White Glove Service includes transportation and mattress delivery to the room of your choice.  Standard service does not include removal of existing mattress but may be added for an additional fee.  Due to mandated restrictions, we are unable to offer in-home set ups in some cities and states.  Shipping is only available to the contiguous U.S., with the following exclusions: Connecticut, and Rhode Island. Alaska and Hawaii also excluded.

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