What distinguishes it
US Twin width with the 80-inch length used by Queen and King.
It adds 5 inches of length without adding width.
38 × 80 in
Metric96.5 cm × 203.2 cm
Imperial38 in × 80 in
Surface area1.96 m²
Market aliases: Twin Extra Long, XL Twin.
0.0 cm width · +12.7 cm length · +6.7% area
The area percentage uses US Twin as its denominator. It adds 5 inches of length without adding width. That difference can change whether a rigid frame opening or fitted bedding matches.
Not the same worldwide
It is 6.5 cm narrower and 3.2 cm longer than an Australian King Single Sealy example.
Evidence type: convention · high confidence.
Before ordering
A named size is not a fit guarantee. Compare the seller’s finished width, length and stated tolerance with the frame opening and bedding specification.
Published tolerance: Nominal convention; check the model specification.
Measure the finished mattress and the frame’s internal opening. Measure the mattress correctly and check which frame dimension controls fit.
Continue this decision
Evidence for this answer
- Better Sleep Council — Mattress SizesChecked 27 August 2026. Minimum factual dimensions only; original wording, tables and visuals.
Correction route: If a current source or product specification conflicts with this page, send the page URL and evidence through the corrections process.