−20%
Diamond
Diamond Dreamstage Value Collection Topaz Firm Tight Top 7" Mattress
4.2(49)
InnerspringFirm
$399From $319
Sale and clearance mattresses are deeply discounted, either former showroom display units or last season's models, all brand new and ship with the same delivery + guarantee as full-price. Browse Twin XL Mattresses below, try every model in person at LA Mattress Store before you buy. Same free white-glove delivery and 120-night Love Your Bed Guarantee as full-price mattresses.
A Twin XL mattress measures 38 inches wide by 80 inches long, the same width as a standard twin but five inches longer, matching the length of a queen or king. That extra length is why Twin XL is the standard in college dorms and the go-to size for taller teens and adults sleeping solo in a compact room. At LA Mattress Stores, we stock Twin XL models from Tempur-Pedic, Helix, Diamond Mattress, and more, all available to try at our five Los Angeles showrooms.
A standard twin runs 38 by 75 inches. For anyone approaching six feet tall, a 75-inch bed leaves feet hanging off the end; the 80-inch Twin XL solves that without taking up any extra floor width. If the sleeper is done growing and under about 5'8", a standard twin costs less and uses the most widely available bedding. For a teenager still growing, Twin XL is the safer buy because it will not be outgrown.
A split king is simply two Twin XL mattresses on one king frame, which is why couples with different firmness preferences or independent adjustable bases buy two Twin XLs rather than one king. If you are shopping for that setup, each sleeper can pick a different model and firmness. Browse our split king collection or ask a sleep consultant to pair two Twin XLs that match in height.
Twin XL prices at LA Mattress Stores run from entry-level models in the low hundreds to premium Tempur-Pedic options over $2,000. Most shoppers land between $400 and $1,200 for a quality foam or hybrid model with a full warranty. 0% APR financing is available on approved credit.
A Twin XL measures 38 inches wide by 80 inches long (96.5 cm by 203 cm). It shares its width with a standard twin and its length with queen, king, and California king widths aside, which is why Twin XL sheets are sized separately from twin sheets.
Flat sheets usually manage, but fitted twin sheets are cut for a 75-inch mattress and will pop off the corners of an 80-inch Twin XL. Buy bedding labeled Twin XL, which is stocked everywhere thanks to the dorm market.
For one adult, yes. At 38 inches wide it offers the same personal space as each half of a king. Couples need at least a full, and realistically a queen. If you share the bed with a pet or spread out while sleeping, consider moving up a size.
Twin XL is the most popular adjustable-base size made. Nearly every foam and hybrid Twin XL we carry is adjustable-compatible, and two on independent bases form the classic split king setup. Visit our adjustable bed collection to pair a base with your mattress.
Every LA Mattress Stores showroom keeps Twin XL models on the floor to test in person, with sleep consultants who can match firmness to the sleeper. Every purchase includes free next-day white-glove delivery on orders over $499 across Los Angeles, same-day available for $100 when you order by 4 PM, a 120-night comfort exchange, and 0% APR financing options.
Same width (38"), different length: Twin is 75" long, Twin XL is 80" long. Twin XL is the standard size for college dorms (most universities require it), and it's the size that two-of pair up to form a Split King for adjustable bases. Twin XL suits adults up to about 6'3"; taller sleepers should consider a Full or Cal King.
No, the 5-inch length difference means a Twin fitted sheet will be too short. Use Twin XL bedding specifically. We carry Twin XL sheets, mattress protectors, and bedding sets at every showroom and online.
Yes, two Twin XL mattresses placed side-by-side equal the exact dimensions of a standard King (76" x 80"). This is the standard configuration for couples using a split adjustable base where each side can elevate independently. If you go this route, look for Twin XLs designed to pair (the seam down the middle should be flush).
Free white-glove delivery on orders over $499 anywhere in Los Angeles. Same-day if you order before 4 PM, otherwise next-day. We set up the new mattress, haul away your old one, and recycle it, not landfill.
We back every purchase with a 120-night Love Your Bed Guarantee. Sleep on it for at least 30 nights to let your body adjust, then if it’s not the right fit, exchange it for any other mattress, we credit the full original price.
Yes. We offer 0% APR financing through Synchrony and Acima on approved credit. Terms vary by purchase amount and partner, apply in 60 seconds at checkout or in any showroom.
