Twin, twin XL or full: the sizes
A twin is 38 inches wide and 75 inches long, the standard size for a child’s bed, a bunk bed or a daybed. A twin XL adds five inches of length (38 by 80 inches): the size of a dorm bed, the right call for a tall teenager, and the size that pairs up to form a split king on an adjustable base. A full, also called a double, is 54 inches wide and 75 inches long, a generous single bed and a workable size for a guest room where a queen will not fit.
Two adults can share a full, but with only 27 inches each it suits occasional use rather than every night. Couples are usually better served by a queen or a king.
Who buys which size
- Twin: children moving out of a toddler bed, bunk beds, daybeds and trundles.
- Twin XL: tall teenagers, dorm rooms, and each half of a split king.
- Full: a teenager or an adult sleeping alone, a guest room, a smaller primary bedroom.
Fitted like every other size
Smaller sizes get the same fitting as a king. Dream Mapping takes about five minutes on the sensor bed, costs nothing, and shows the Sleep Coach which comfort level and support the sleeper needs, which matters for a growing child as much as for an adult. The showroom carries Tempur-Pedic, Sealy, Stearns & Foster, Beautyrest, Helix, Puffy, King Koil, Englander, Spring Air and Snooze-O-Pedic; ask which models are on the floor in twin, twin XL and full.
Mattress protectors are a sensible addition for kids’ and guest beds: they guard the mattress against spills, stains and allergens while keeping the feel of the mattress.
Delivery, financing and the guarantee
- Free delivery and setup on orders over $999, with haul-away of the old mattress if you no longer need it.
- Financing through Synchrony and Wells Fargo, and a lease-to-own option through Snap Finance.
- Every purchase at Snooze Mattress + Wellness is backed by the Sleep Comfort Guarantee; ask a Sleep Coach for the details.
- Visit 7913 N 10th St, Suite 130, McAllen, TX 78504, Mon–Sat 10 AM–7 PM, Sun 12–6 PM.
Full and twin mattress questions
Length: a twin is 38 by 75 inches and a twin XL is 38 by 80 inches, the same length as a queen or king.
A full (double) is 54 inches wide by 75 inches long.
It works for occasional use, but at 27 inches per person most couples are better served by a queen or a king.
Yes. The fitting takes about five minutes and shows which comfort and support level fits any sleeper.
Two twin XL mattresses side by side in a king frame.