Definition of Twin XL

Meaning of the Term as it Pertains to Mattresses

What is a Twin XL?

A twin XL is a mattress measuring 39 inches wide by 80 inches long. A twin XL is the same width as a twin mattress but offers added length in order to accommodate taller sleepers. Generally, anyone over 5'10" would be better suited with a twin XL than a twin mattress.

The mattress type is commonly found in college dormitories or bedrooms of taller individuals who want to save space. Parents may also purchase the mattress for their children in anticipation of many years of growth. Twin XL mattresses require twin extra-long bedding.