Bed Size Lab

US specialty mattresses

Oversized bed sizes: Olympic Queen, Wyoming King, and Alaskan King

Oversized bed labels are specialty market conventions, not regulated US standards. Current examples range from the 66 × 80 in Olympic Queen to the 108 × 108 in Alaskan King.

Semrush US · 9,900 searches/mo · KD 17
Label or calculationDimensionsWhat it means
Olympic Queen66 × 80 in (167.6 × 203.2 cm)Six inches wider than standard Queen; same nominal length.
Wyoming King84 × 84 in (213.4 × 213.4 cm)Current specialist-manufacturer example; square footprint.
Alaskan King108 × 108 in (274.3 × 274.3 cm)Current manufacturers agree on a nine-foot square footprint.
Standard King baseline76 × 80 in (193 × 203.2 cm)Included as a comparison, not an oversized specialty label.
Manufacturer variation matters.

Verify the mattress, base, frame, bedding, doorway, stair, and delivery dimensions as one system. The label alone does not guarantee compatibility.

Oversized does not mean standardized

These names emerged through specialty manufacturing rather than a regulated national chart. Written width and length—and the date of the specification—are more reliable than the label.

Plan the complete footprint

A large mattress is only the inner rectangle. Add frame rails, upholstery, headboard, required support, walking clearance, and an assembly route before ordering.

Measurement method

Start with the product and space you actually have.

  1. 1

    Measure the mattress. Record width, length, and full depth without relying on the label.

  2. 2

    Add every layer. Toppers and pads change fitted-sheet pocket needs.

  3. 3

    Choose coverage. Decide the side drop, foot drop, top alignment, and any tuck.

  4. 4

    Read finished dimensions. Compare your target with the actual product specification.

Test the outer footprint in your roomUse your measurements instead of relying on a nominal label.
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Questions, answered

Frequently asked questions

What is the largest common oversized bed label?

Among the current examples in this guide, Alaskan King is largest at 108 × 108 inches.

Do King sheets fit oversized beds?

Standard King fitted sheets do not match these wider specialty shapes. Use the mattress’s finished width, length, and depth to source or commission bedding.

Sources for this page