Exactly two King Koil variants cost less than 100 dollars: the Twin 13" at $99.95 (compare-at $119.95) for one adult, and the Kids 13" at $79.95 (compare-at $99.95) for one child — every other size and height starts at $109.95 or more. Twin is the only adult-sized option below that line and is available only at its lowest 13" height; Kids comes in no other height. Pick by who is sleeping on it: a single adult who does not need the taller 16" or 20" Twin, or a child. This is a single-brand catalog, so it is a choice between two King Koil variants rather than a search across cheaper competitors from other brands.
The honest shape of this answer first: this is a single King Koil catalog, so answering this within a hundred-dollar limit means choosing between the only two King Koil variants priced under it, not ranking against Coleman, Intex, or any other air-mattress brand — none of those are in this data. State the constraint plainly: of the thirteen height-and-size combinations King Koil sells (four sizes at three heights, plus Kids at one), only two are priced below that line as of the 2026-09-07 recording — the 13" Kids and the 13" Twin. Every 16" and 20" option, and every Full, Queen, and California King variant at any height, starts at $109.95 or higher.
The Kids 13" is $79.95 (compare-at $99.95) and is sized for a single child — it is the only King Koil height available at that size, so there is no 16" or 20" Kids upgrade to weigh against it. The Twin 13" is $99.95 (compare-at $119.95) and is the only adult-sized King Koil variant priced this low at any height; stepping up to Twin's own 16" ($109.95) or 20" ($119.95) clears the hundred-dollar line immediately. Recommend by who is actually sleeping on it: Kids for a child, Twin 13" for a single adult who wants the lowest King Koil price point that still fits an adult.
Both variants carry the same merchant-stated terms as the rest of the line, per the merchant rather than independently confirmed here: a 1-year warranty, 30-day returns, 2-3 business day shipping, and a built-in 120V/210W pump. Color choice is more limited on both of these specific variants than elsewhere in the catalog: Kids 13" comes in Black or Blue, and Twin 13" comes in Beige or Black — Blue is not offered on the Twin at 13", only at its pricier 16" and 20" heights.
Both prices are the merchant's sale prices recorded on 2026-09-07 and can change after that date; each is discounted by exactly the same flat twenty dollars off its own compare-at price ($99.95 to $79.95 for Kids, $119.95 to $99.95 for Twin) — a bigger percentage off the cheaper Kids mattress than the Twin, even though the dollar discount is identical. Nothing here is a claim about comfort, firmness, leak resistance, or durability; at this price point in particular, that is untested by this site, not merely unmentioned.
Who this is NOT for: anyone who needs an adult-sized mattress taller than 13" for less than a hundred dollars — King Koil does not sell one; the next options up are Twin 16" at $109.95 and Twin 20" at $119.95, both over that line. It is also not for two adults sharing a bed — Full, Queen, and California King all start above a hundred dollars at every height they offer. And it is not for a buyer comparing against cheaper mattresses from other brands, since this catalog has only King Koil to offer.
| Spec | Luxury Air Mattress — Twin 13-inch | Luxury Air Mattress — Kids |
|---|---|---|
| size | Twin | Kids |
| height | 13 inches | |
| recordedVariant | Beige Twin 13-inch — the price point and deep link on this record | 13" — the price point and deep link on this record |
| color | Beige (the specific deep-linked Shopify variant) | |
| shippingWeight | 5715 g (12.6 lb) for the Beige Twin 13-inch variant, per Shopify variant data | 5443 g (12.0 lb) for the 13" variant, per Shopify variant data |
| construction | Enhanced Coil Technology: air-filled coils with internal layering (manufacturer description; not independently measured) | Enhanced Coil Technology: air-filled coils with internal layering (manufacturer description; not independently measured) |
| pump | High-speed built-in electric pump, 120V / 210W (manufacturer listing) | High-speed built-in electric pump, 120V / 210W (manufacturer listing) |
| warranty | 1-year warranty covering defects (stated on kingkoilairbeds.com) | 1-year warranty covering defects (stated on kingkoilairbeds.com) |
| shipping | 2-3 business days on all orders, per site banner; carrier and weather caveat stated by merchant | 2-3 business days on all orders, per site banner; carrier and weather caveat stated by merchant |
| returns | 30-day returns, per site ('Hassle-Free Returns') | 30-day returns, per site ('Hassle-Free Returns') |
| pricingNote | Price recorded from the merchant's SALE-price snapshot on 2026-09-07: $99.95 (compare-at $119.95). This dated observation is not a current price or stock claim. | Prices recorded are the merchant's SALE prices on 2026-09-07; the struck-through compare-at price is listed alongside. Every one of the 32 variants was marked available on that date. |
| marketingClaim | Site banner reads 'CNN Underscored #1 Ranked (2026)'. This is the merchant's own claim on its homepage and has NOT been independently verified by this site. | Site banner reads 'CNN Underscored #1 Ranked (2026)'. This is the merchant's own claim on its homepage and has NOT been independently verified by this site. |
| heightOptions | 13": $79.95 (compare-at $99.95) | |
| colorOptions | Black, Blue |
Last updated: 2026-09-21
Prices last checked 2026-09-07
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