Sizes · heights · inches added · pockets
The numbers on bed listings that have to agree
A mattress states a height. A topper adds inches to it. A quilted cover states a pocket that has to hold both, and every one of them states a size name. This catalog checks whether those numbers line up, using only what each listing prints.
Six agreements · 56 listings · 2026
Size names across categories
Which sizes this catalog can put together
Count of listings for each size name in each category. A red zero means nothing of that size is filed, and the last column says whether the whole stack is there.
| Size name | Mattresses | Bed Frames | Mattress Toppers | Mattress Pads | Nightstands | Whole stack |
|---|---|---|---|---|---|---|
| Twin | 5 | 3 | 2 | 1 | Nightstands state no size. 10 listings, counted apart. | Complete |
| Twin XL | 0 Twin XL Mattresses: none filed | 0 Twin XL Bed Frames: none filed | 2 | 2 | No Mattresses and Bed Frames | |
| Full | 3 | 3 | 3 | 0 Full Mattress Pads: none filed | No Mattress Pads | |
| Queen | 2 | 5 | 5 | 8 | Complete | |
| King | 1 | 1 | 0 King Mattress Toppers: none filed | 0 King Mattress Pads: none filed | No Mattress Toppers and Mattress Pads | |
| The whole stack is filed in Twin and Queen. It is not filed in Twin XL, Full and King: each of those sizes is missing one or more parts. | ||||||
5
Topper and pad are two builds sold under one pair of words
Five of the 23 topper and pad listings use both words in the title or the description. A topper here states a thickness; a quilted cover states a pocket. The words cannot tell them apart, so this catalog files them by build: The word topper and the word pad.
The pairs
Six numbers that must agree with another
Twin and Twin XL are not one size
The size name on every part has to be the same name, and Twin and Twin XL are different names.
Must match
Mattress height and pocket range
The pocket has to contain the mattress height, and both listings have to carry the same size name.
Must contain
A topper adds inches to the total
The pocket has to contain the mattress height plus the topper thickness, and every listing in the stack has to carry the same size name.
Must contain
Pocket ranges that do not line up
A total has to sit inside the pocket of the cover that goes over it, and covers of the same size do not promise the same window.
Must contain
Frame height and what goes under it
Whatever goes under the bed has to fit the gap below the frame, and that gap is the number the listings leave out.
Cannot be checked
The word topper and the word pad
The word on a listing and the build of the thing have to point the same way, and in these listings they often do not.
Cannot be checked
Tool
Add the stated inches and check the pockets
The full page is the Depth Fit Check. The same check runs here: a mattress, an optional topper of the same size, and every quilted cover of that size against the total.
Mattress
Topper
Switched off until a mattress is chosen: a topper can only be added to a mattress of its own size.
The rules this check follows
- The tool adds stated inches and measures nothing.
- The mattress and the topper must state the same size name before any arithmetic; a topper of another size is switched off.
- Total = the mattress height the listing states + the topper thickness the listing states. With no topper, the total is the mattress height.
- Where a listing leaves the height or the thickness out, no total is calculated and every row reads that there is nothing to check.
- Covers listed are the quilted covers that state the same size name as the mattress.
- A pocket stated as a range contains the total when the total is at least the shallow figure and at most the deep figure.
- A pocket stated as one number is read as its deepest fit: a total at or under it counts as contained, and the row says no shallow limit is stated.
- A cover that states no pocket gives nothing to check against.
Every combination this tool allows was run through these rules: 40 combinations, giving 47 rows that contain the total, 0 rows that miss and 64 rows with nothing to check, plus 13 combinations in a size with no cover filed. The miss state is part of the rules and does not come up with the listings in this catalog.
Bottom to top
The parts of the bed, and the number each one states
The frame
States
A frame height in inches, and a size name.
Has to agree with
The size name has to match the mattress. The height has nothing it must match, and the clearance under the frame is not stated.
10 of 12 listings state a frame height
The mattress
States
A height in inches, and a size name.
Has to agree with
The size name has to match the frame, the topper and the cover. The height, plus any topper thickness, has to sit inside the cover’s pocket.
10 of 11 listings state a height
The topper
States
A thickness in inches, and a size name.
Has to agree with
The size name has to match the mattress. The thickness is added to the mattress height, and the cover’s pocket has to contain the sum.
9 of 12 listings state a thickness
The quilted cover
States
A pocket depth, as a range or as one number, and a size name.
Has to agree with
The size name has to match the mattress. The pocket has to contain the mattress height plus any topper thickness.
11 of 11 listings state a pocket depth
The nightstand
States
Nothing that has to agree with another part.
Has to agree with
Nothing. This part has no required match, and the page says so rather than inventing one.
1 of 10 listings state a height
Printed beside the numbers
The marks, and who stands behind them
| The mark | What it is | Who runs it | Listings stating it | Page |
|---|---|---|---|---|
| CertiPUR-US / CertiPUR / CertiPur | A certification program for flexible polyurethane foam. | The program’s site says it is administered by the Alliance for Flexible Polyurethane Foam, a nonprofit organization incorporated in 2008. | 17 | CertiPUR-US |
| OEKO-TEX certified materials | OEKO-TEX describes its STANDARD 100 as a label for textiles tested for harmful substances, tested against a list of more than 1,000 of them. | The standard and its Label Check are published by OEKO-TEX on its own site. | 2 | OEKO-TEX |
| Good Housekeeping Seal | A seal from Good Housekeeping, which says scientists in the Good Housekeeping Institute evaluate products that apply for it, and which calls it a limited warranty Seal. | Good Housekeeping and its Institute. | 1 | Good Housekeeping Seal |
| ICA Endorsed | A phrase in a listing title. | Not stated in the listing, and not confirmed here from any published source. | 1 | ICA Endorsed |
| Fiberglass Free | A phrase printed on four mattress listings in this catalog. | No program is named in any of those listings, and this site found no published program behind the phrase that it could cite. | 4 | Fiberglass Free |
The catalog in four figures
56
listings in the catalog
across five categories
2
size names with the whole stack filed
out of five size names
6
different pocket figures stated
on eleven quilted cover listings
0
frame listings that state the clearance underneath
of twelve frame listings
Tool
Pick a size name and count every part
The full page is the Size Coverage Check. Exact size names only, with Twin and Twin XL kept apart.
Size name
How the count works
- A listing counts toward a size only when the size name it states is exactly that name.
- Twin and Twin XL are never matched to each other: a Twin listing does not count toward Twin XL, and a Twin XL listing does not count toward Twin.
- A size is complete when mattresses, bed frames, toppers and pads each have at least one listing of that size.
- Nightstands state no size. They are counted apart and never make a size complete or incomplete.
All 5 size names were run before publishing: complete in Twin and Queen, not complete in Twin XL, Full and King.
What this catalog is
It holds 56 listings in five categories: 11 mattresses, 12 bed frames, 12 toppers, 11 quilted mattress pads and 10 nightstands. Every figure on this site is one of those listings’ own, quoted and counted, never averaged or filled in.
It does not cover every size evenly. The whole stack is filed only in Twin and Queen. Twin XL has zero mattresses and zero frames; Full has zero quilted covers; King has zero toppers and zero covers.
Some filings need a word of warning. Niagara Sleep Solution has listings in both accessory categories, toppers and pads, and each is filed by its build. A tall dresser sits among the nightstands, in a group of its own.
It is not a guide to choosing a bed for a person. Feel words, comfort claims and certification marks are quoted as the sellers print them, and the About page says what this site will not say.
Plain answers
Six questions the listings raise
- Is Twin XL just another name for Twin?
- No. They are different size names for different lengths, and this catalog files zero Twin XL mattresses to go with its Twin XL accessories.
- Does a topper change which cover will go over the bed?
- It changes the number the cover has to contain. The stated topper thickness is added to the stated mattress height, and the pocket is checked against that sum.
- Is the frame height the space under the bed?
- Nothing in the listings says so. Zero of the twelve frame listings state a clearance, so the room below a frame cannot be checked here.
- Which sizes can be put together as a whole stack?
- Twin and Queen. Twin XL, Full and King each miss one or more parts in this catalog.
- Are CertiPUR-US and OEKO-TEX government standards?
- Neither is presented that way on the pages cited here. CertiPUR-US says a nonprofit administers it, OEKO-TEX publishes its own labels, and the federal mattress rules in the eCFR are flammability standards.
- Does this site recommend a mattress?
- No. It compares the numbers the listings print and says nothing about how any mattress suits anyone.
From the catalog
Five listings, one from each category
Each is the first listing on its category page, where its full card and comparison table sit.
EGOHOME King 14 inch Memory Foam Mattress, Medium Firm
The one King mattress in this catalog, and the tallest stated height. Anything stacked on it starts from 14 in, so a quilted cover has to reach past that before a topper is even counted.
View listing: EGOHOME King 14 in
Mellow Naturalista Classic 12 Inch Solid Wood Platform Bed, Full, Natural Pine
The wooden frame here, and the frame height that differs from all the others. The listing gives 12 in and, like every other frame, says nothing about the gap left underneath.
View listing: Mellow Full 12 in
Lucid 4 Inch Memory Foam Mattress Topper, Twin XL
The thickest stated topper in the catalog, and a Twin XL. It adds 4 in to a mattress of its own size, so the size check comes before any addition.
View listing: Lucid Twin XL 4 in
Bare Home Quilted Twin XL Mattress Pad
The narrowest stated pocket range among the pads, 8 to 16 in, on a Twin XL. The narrower the range, the smaller the window a total has to land in.
View listing: Bare Home Twin XL 8–16 in
DUMOS Night Stand with 2 Drawers, 20 Inch Tall, Classic Black
The nightstand listing with a stated height, 20 in. Nothing on the bed has to match it; it is a number with no partner.
View listing: DUMOS 2-drawer