A reference for the numbers printed on bed listings · MattressRestFalls sells nothing directly; product buttons lead to Amazon

MattressRestFalls

Agreements

Twin and Twin XL are not one size

Twin

Size
11 of 11 listings
Height
8 of 11 listings
Thickness
2 of 11 listings
Pocket
1 of 11 listings
Printed length
1 of 11 listings

The size name Twin, and a printed outline where one is given: stated by 1 listing, left out by 10 listings. Part: The mattress.

Twin XL

Size
4 of 4 listings
Height
not stated by the manufacturer
Thickness
2 of 4 listings
Pocket
2 of 4 listings
Printed length
2 of 4 listings

The size name Twin XL, and a printed outline where one is given: stated by 2 listings, left out by 2 listings. Part: The quilted cover.

Must match

The size name on every part has to be the same name, and Twin and Twin XL are different names.

Every listing that states it

15 rows, grouped by the part each listing is filed under.

ListingSize and printed outline
The mattress
FDW 5 Inch Twin Mattress, Medium Firm, Gel Memory FoamTwin, no outline printed
MLILY 8 Inch Twin Mattress, Green Tea Memory Foam, Medium FirmTwin, 75 by 38 in
Novilla Twin Mattress, 6 Inch Gel Memory FoamTwin, no outline printed
Zinus 8 Inch Twin Cooling Essential Memory Foam Mattress, Medium FeelTwin, no outline printed
Zinus 6 Inch Twin Foam and Spring Hybrid Mattress, Medium Firm FeelTwin, no outline printed
The frame
OLIXIS Twin Metal Platform Bed Frame, 14 in HighTwin, no outline printed
LUMUNANCE Metal Bed Frame, Twin, 14 Inch PlatformTwin, no outline printed
Allewie Twin Bed Frame, 14 inch Metal PlatformTwin, no outline printed
The topper
OLIXIS 2 Inch Twin Cooling Gel Memory Foam Mattress TopperTwin, no outline printed
SINWEEK 2 Inch Twin Gel Memory Foam Mattress TopperTwin, no outline printed
Lucid 4 Inch Memory Foam Mattress Topper, Twin XLTwin XL, no outline printed
SINWEEK 2 Inch Memory Foam Mattress Topper, Twin XLTwin XL, 39 by 80 in
The quilted cover
Amazon Basics Quilted Mattress Topper Pad, Twin, 18 Inches DeepTwin, no outline printed
Bedsure Twin XL Mattress Pad, Quilted Fitted ProtectorTwin XL, 39 by 80 in
Bare Home Quilted Twin XL Mattress PadTwin XL, no outline printed

The names share a word and the listings do not share a length. Where a listing here prints its outline, the Twin prints a length of 75 in and the Twin XL listings print 80 in. The Better Sleep Council, sponsored by the International Sleep Products Association, gives a twin as about 75 inches long and a twin XL as the same width with 5 inches more length.

In this catalog the gap is wider than a length. Twin XL is filed in Mattress Toppers and Mattress Pads and nowhere else: the catalog has zero Twin XL mattresses and zero Twin XL frames. Every Twin XL listing here is an accessory with no mattress of its own size filed beside it.

Twin, by contrast, turns up in every sized category: 5 mattresses, 3 bed frames, 2 toppers and 1 pad. A Twin XL accessory chosen because it sits next to a Twin mattress in a search is exactly the pairing this page is about.

What goes wrong

A Twin XL topper or cover bought for a Twin mattress, or a Twin one for a Twin XL mattress. The size word looks close enough to pass, and the length is where they part.

What the listings do not say

Most Twin and Twin XL listings print no length at all: ten of the eleven Twin listings and two of the four Twin XL listings give the size word with nothing to confirm it. The Twin XL listings that print an outline give a width of 39 in, where the Better Sleep Council gives about 38 inches; this site prints both as given.

Check it with a tool

Size names by category are counted in the Size Coverage Check.

Sources