Updated May 2026
King Koil Mattress Review
A century-old licensed manufacturer known for chiropractic-endorsed innersprings.
Founded
1898
Headquarters
Willowbrook, Illinois
Models Tested
6
About King Koil
King Koil dates to 1898 and operates on a licensing model: regional manufacturers build to King Koil specifications and sell through furniture retailers and hospitality channels worldwide.
The brand is best known for its long relationship with chiropractic organisations and for the Chiropractic-endorsed innerspring and hybrid lines aimed at back support.
As with other licensed brands, spec varies by retailer and region. That makes model-to-model comparison harder than with a DTC brand, but it also means frequent, deep retail promotions.
What they make
Innerspring, hybrid, and foam mattresses across budget to upper-mid tiers, plus hospitality and air-bed products.
Origin
American — built by licensed regional manufacturers
King Koil Signature Technologies
Reflex Support Coils
The pocketed and continuous coil systems used across the lineup, with a reinforced centre third on support-focused models.
Chiropractic-Endorsed Design
Support-first builds developed with chiropractic input, the brand's longest-running positioning.
Gel Memory Foam Comfort Layers
Gel-infused foam quilting on upper-tier models to soften a firm coil base without excess heat.
Best for
- Shoppers who want to test in a store before buying
- Back sleepers who prefer a traditional firm innerspring
- Guest rooms and hospitality-style setups
- Promotion hunters at furniture retailers
Not ideal for
- Buyers who want consistent, comparable specs across retailers
- Side sleepers wanting deep contour
- Anyone who prefers a long DTC-style trial
Every King Koil Mattress We've Tested
King Koil Mattress Comparison Table
| Mattress | Score | Type | Firmness | Height | Price | Trial | Warranty | Compare |
|---|---|---|---|---|---|---|---|---|
| King Koil FLOWT | 8.9 | Hybrid | Medium | 14 inches | $2,999 | 120 nights | 10 years | |
| King Koil PureBliss | 8.8 | Latex | Medium | 13 inches | $1,899 | 120 nights | 10 years | |
| King Koil Reserve Luxury | 8.7 | Hybrid | Medium Soft | 15 inches | $3,799 | 120 nights | 10 years | |
| King Koil Xtended Life | 8.6 | Hybrid | Medium Firm | 14 inches | $2,549 | 120 nights | 10 years | |
| King Koil Natural | 8.5 | Hybrid | Medium | 13 inches | $2,349 | 120 nights | 10 years | |
| King Koil Scott Living by King Koil | 8.2 | Hybrid | Medium | 12 inches | $1,299 | 120 nights | 10 years |
How Much Does a King Koil Mattress Cost?
King Koil queens run $450–$2,200 across the lineup (budget to upper-mid tier). The table below estimates the rest of the size ladder from that queen range using the standard size pricing brands apply — the low column tracks the entry model, the high column the flagship. Treat these as planning estimates rather than quotes: promotions move real street prices by 20–30% for weeks at a time.
| Size | Dimensions | Entry model (est.) | Flagship (est.) |
|---|---|---|---|
| Twin | 38" × 75" | $280 | $1,365 |
| Twin XL | 38" × 80" | $295 | $1,450 |
| Full | 54" × 75" | $370 | $1,805 |
| Queen | 60" × 80" | $450 | $2,200 |
| King | 76" × 80" | $575 | $2,815 |
| California King | 72" × 84" | $575 | $2,815 |
Estimates based on King Koil's published queen pricing and the standard US size ladder. Retailer delivery. Varies by retailer, commonly 90–120 nights; 10-year limited warranty on most models.
How to Pay Less for a King Koil
Pricing, Trial & Warranty
Price range (Queen)
$449–$2,199
Budget to upper-mid
Good on promotion, ordinary at list
Trial period
Varies by retailer, commonly 90–120 nights
10-year limited warranty on most models
Shipping
Retailer delivery
Financing
Retailer financing varies
Pros
- Over a century of manufacturing history
- Widely available in physical stores
- Firm, supportive innerspring feel that traditional sleepers prefer
- Frequent retail discounting
Cons
- Retailer-exclusive model names make research difficult
- Comfort layers on entry models soften quickly
- Trial terms set by the store, not the brand
King Koil vs. The Competition
King Koil won 0 of 1 head-to-head matchups in our lab.
King Koil FAQ
Are King Koil mattresses good for back pain?
The firmer Chiropractic-line innersprings and hybrids provide solid lumbar support and are a reasonable choice for back sleepers with lower-back pain. Side sleepers with hip or shoulder pain generally need more comfort-layer depth than the entry models provide.
Why do King Koil prices vary so much between stores?
King Koil licenses its name to regional manufacturers and builds retailer-exclusive models, so the same model name can have different foam and coil specs in different stores. Compare coil count and comfort-layer depth rather than model names.
Is King Koil the same company as Sealy or Serta?
No. King Koil is independently licensed and unrelated to Serta Simmons or Tempur Sealy, though all three use similar licensed or regional manufacturing structures.
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