Glossary
Words as the listings in this catalog use them. Where a definition reaches beyond the listings, it names its published source.
- Twin
A size name. The Better Sleep Council gives a twin as about 38 inches wide by 75 inches long. It is a different length from Twin XL, and this site never counts the two names as one.
- Twin XL
A size name for a bed the Better Sleep Council describes as the same width as a twin with 5 inches more length. It is a different length from Twin. In this catalog Twin XL is filed in Mattress Toppers and Mattress Pads and in no mattress or frame category.
- Full
A size name. The Better Sleep Council gives a full as 53 inches wide and about as long as a twin. This catalog files Full in Mattresses, Bed Frames and Mattress Toppers, and in no quilted cover category.
- Queen
A size name the Better Sleep Council gives as 60 inches wide by about 80 inches long. In this catalog it is one of the sizes filed in every sized category: Twin and Queen.
- King
A size name the Better Sleep Council gives as 76 inches wide by about 80 inches long. This catalog files King in Mattresses and Bed Frames only, so a King stack has no topper or cover here to check.
- Deep pocket
The phrase cover listings use for the depth of the fitted pocket. Here it is stated either as a range or as a single number, and it is the figure that has to contain the mattress height plus any topper.
Mattress height and pocket rangePocket ranges that do not line up
- Fitted skirt
A phrase some bedding listings use for the sides of a fitted cover. None of the listing descriptions in this catalog uses it; the covers here state a pocket depth instead, and that depth is what this site checks.
- Mattress topper
On this site, a layer that states a thickness and adds inches on top of a mattress. The listings in this catalog use topper and pad for both builds, so the site files by construction. The eCFR text of 16 CFR Part 1633 lists mattress toppers apart from mattresses.
- Mattress pad
On this site, a quilted cover with a fitted pocket that goes over the whole mattress. The eCFR text of 16 CFR Part 1632 defines a mattress pad as a thin, flat mat or cushion, or ticking filled with resilient material, for use on top of a mattress.
- Mattress protector
A word several quilted cover titles here use beside pad. This site files those listings by the pocket they state and treats protector as a naming word rather than a separate category.
- Pillow top
A phrase that appears in titles filed as toppers and as pads alike. It names a build rather than a number, so on its own it gives the fit check nothing to work with.
- Memory foam
A material named in most mattress and topper titles here. The listings give no density or formula for it, and this site does not describe how it behaves.
- Gel infusion
Gel infused, gel memory foam and similar phrases turn up in many foam titles here. The listings give no figure for the gel, and this site does not say what it does.
- Hybrid
In this catalog, the word on the mattress listing that states foam and springs together. Its stated height enters the depth arithmetic exactly as a foam height does.
- Box spring
The frame listings here state that no box spring is needed. The eCFR text of 16 CFR Part 1633 defines a foundation, for that standard, as a ticking covered structure used to support a mattress.
- Platform bed
The build most frame listings here name: a platform with slats and no box spring. Those listings state a frame height and no clearance underneath.
- Slat support
Slats are named in several frame listings, in steel or wood. No listing here gives a slat spacing or a slat count.
- Bed in a box
A format phrase a mattress listing here states. This site gives no unpacking or setup directions for it; those belong to the maker’s instructions.
- Loft
A word bedding listings sometimes use for the fullness of a filled layer. No listing in this catalog states a loft figure: toppers state a thickness and covers state a pocket.
- Profile
Some listings use profile for the height of a mattress or topper. The listings here say inch or height instead, and this site uses height for mattresses and thickness for toppers.
- CertiPUR-US
A certification program for flexible polyurethane foam that, according to its own site, is administered by the Alliance for Flexible Polyurethane Foam. The listings here spell the name three ways.
- OEKO-TEX
The name on a family of textile labels; OEKO-TEX describes its STANDARD 100 as a label for textiles tested for harmful substances. Two listings here name OEKO-TEX certified materials.
- Fiberglass
A word this catalog meets only inside the seller phrase Fiberglass Free. This site does not define it or say anything about it.
- Weight capacity
A load figure some frame listings print. Two frame listings here print one; this site quotes them as the listings state them and confirms none.