Buying sheets for the twin XL bed in your dorm room at college or boarding school can be confusing when there are so many terms tossed around. To make it simple, twin extra long (commonly referred to as TXL, XLT, or twin XL sheets) are made to fit a longer mattress. A twin XL mattress is actually 5 inches longer than a standard twin. It's that simple. At DormSmart you can rest assured that these sheet sets will fit a twin XL bed. Even better, we offer quality sheet sets by reputable manufacturers in a variety of fabrics such as long staple cotton, Egyptian cotton, and microfiber in multiple colors, patterns, prints, and thread counts for every budget. Just be sure to check the mattress size in your dorm room directly with your housing office before shopping for sheets for college or boarding school. It is best to purchase two sheet sets for your dorm room so you always have a clean set.