Source register
Sources for our measurements
These primary and near-primary references support the regional size records and bedding examples throughout Bed Size Lab.
Better Sleep Council / ISPA
Mattress SizesCommon US mattress names and top dimensions.
Reviewed 2026-09-11 manufacturerTempur-Pedic
TEMPUR-Cloud measurementsFinished dimensions for a current US mattress line and manufacturer-variation note.
Reviewed 2026-09-11 industry associationNational Bed Federation
Bed Buyers’ GuideTypical UK mattress dimensions and warning that bed sizes are not standardized.
Reviewed 2026-09-11 manufacturerIKEA UK
UK Mattress Size GuideCurrent UK mattress size names and metric dimensions.
Reviewed 2026-09-11 manufacturerIKEA Germany
Leitfaden für MatratzengrößenCommon German and continental European mattress sizes.
Reviewed 2026-09-11 manufacturerbett1.de
MatratzengrößenManufacturer size availability across common German widths and lengths.
Reviewed 2026-09-11 manufacturerOrtobom
Tamanhos de colchõesCurrent Brazilian single, double, queen, and king mattress dimensions.
Reviewed 2026-09-11 manufacturerOrtobom
Os 3 passos para o Ortobom idealSecond Ortobom dimension listing used for agreement checks.
Reviewed 2026-09-11 manufacturerIKEA Italy
Materassi: tipologie e misureItalian single, una piazza e mezza, matrimoniale, and king-size ranges.
Reviewed 2026-09-11 retailer specificationIKEA Italy
Dimensioni disponibili dei materassiCurrent product dimension list for cross-checking Italian sizes.
Reviewed 2026-09-11 manufacturerIKEA France
Tailles de matelas en FranceFrench single, double, queen, and king mattress conventions.
Reviewed 2026-09-11 manufacturerEmma France
Nos matelasFrench product size range used to confirm common dimensions.
Reviewed 2026-09-11 manufacturerIKEA Spain
Todas las medidas de colchonesSpanish 190 cm conventions and continental European sizes sold in Spain.
Reviewed 2026-09-11 retailer specificationIKEA Spain
Colchones: medidas más comunesCurrent Spanish product categories and size availability.
Reviewed 2026-09-11 manufacturerIKEA Australia
Mattress and bed conversion chartAustralian named sizes with rounded metric and inch measurements.
Reviewed 2026-09-11 retailer specificationIKEA Australia
Mattresses in different sizesCurrent Australian-market single, double, queen, and king size listings.
Reviewed 2026-09-11 manufacturerThe Company Store
Better Down and Feather Pillow size informationFinished standard, queen, and king pillow dimensions.
Reviewed 2026-09-11 manufacturerThe Company Store
Comfort Wash Linen size informationOne current US product line showing flat, fitted, duvet, pillowcase, and sham dimensions.
Reviewed 2026-09-11 manufacturerThe Company Store
Bed sheet sizes and measurement guideCurrent fitted- and flat-sheet examples, including Twin XL, Full, Queen, King, California King, and pocket-depth ranges.
Reviewed 2026-09-11 manufacturerBrooklinen
Bedding product dimensionsCurrent US fitted- and flat-sheet examples used to compare Twin XL, Full, Queen, King, and California King shapes.
Reviewed 2026-09-11 manufacturerBrooklyn Bedding
Mattress sizes and specialty dimensionsCurrent finished dimensions for Full XL, Olympic Queen, Short Queen, and multiple RV King variants.
Reviewed 2026-09-11 manufacturerMattress Insider
Mattress size chartCurrent specialty mattress examples, including Full XL and Olympic Queen, used to document manufacturer variation.
Reviewed 2026-09-11 manufacturerMattress Insider
RV mattress size guideCurrent Short Queen and RV King variants showing that RV labels do not identify one universal rectangle.
Reviewed 2026-09-11 manufacturerSaatva
Split King mattress dimensionsCurrent manufacturer dimensions for Twin XL and the combined Split King footprint.
Reviewed 2026-09-11 manufacturerWyoming King Beds
Wyoming King mattressCurrent manufacturer specification for an 84 × 84 in Wyoming King mattress.
Reviewed 2026-09-11 manufacturerAlaskan King Sleep
Alaskan King size guideCurrent manufacturer specification for a 108 × 108 in Alaskan King mattress.
Reviewed 2026-09-11 manufacturerNolah
Luxe Alaskan King mattressSecond current manufacturer listing used to confirm the 108 × 108 in Alaskan King footprint.
Reviewed 2026-09-11 manufacturerTempur-Pedic
TEMPUR-Flat foundation specificationsCurrent standard, low, and ultra-low foundation heights plus finished dimensions for common US sizes.
Reviewed 2026-09-11 manufacturerBeautyrest
Flat foundation size chartCurrent standard- and low-profile foundation examples that show small finished-dimension variation.
Reviewed 2026-09-11 manufacturerSealy
StableSupport foundation specificationsCurrent 5 and 9 in foundation heights and common US finished dimensions.
Reviewed 2026-09-11 manufacturerSouthShore Fine Linens
Bed Skirt Size ChartCurrent Twin, Full, Queen, King, and California King deck dimensions with a 15-inch drop.
Reviewed 2026-09-11 manufacturerHiEnd Accents
Coverlet and Bed Skirt Size ChartSecond current bed-skirt product chart showing deck-length and drop variation by size.
Reviewed 2026-09-11 manufacturerTempur-Pedic
How tall are Tempur-Pedic mattresses?Current model-by-model finished mattress heights from 10 to 13 inches.
Reviewed 2026-09-11 retailer specificationIKEA US
MALM Queen bed frame dimensionsCurrent Queen frame outer footprint and mattress opening used as a real-product example.
Reviewed 2026-09-11 retailer specificationIKEA US
MALM King bed frame dimensionsCurrent King frame outer footprint and mattress opening used as a real-product example.
Reviewed 2026-09-11 retailer specificationIKEA US
MALM Full bed frame dimensionsCurrent Full frame outer footprint and mattress opening used as a real-product example.
Reviewed 2026-09-11 retailer specificationIKEA US
MALM Twin bed frame dimensionsCurrent Twin frame outer footprint and mattress opening used as a real-product example.
Reviewed 2026-09-11 manufacturerIKEA UK
UK duvet and cover sizesCurrent single, double, and king duvet-cover finished dimensions.
Reviewed 2026-09-11