Question 1

What are the dimensions of a twin mattress?

Accepted Answer

A standard twin mattress measures 38 inches wide by 75 inches long  -  3 feet 2 inches wide by 6 feet 3 inches long. Twin is also called "Single" in some retail contexts. It is the smallest standard adult mattress size, 16 inches narrower than a full and 5 inches shorter than a Twin XL. The minimum recommended room size for a twin bed is 7′×10′, though 8′×10′ gives better clearance for furniture and walkable space.

Question 2

Twin vs Twin XL  -  what is the difference?

Accepted Answer

A standard twin is 38" wide by 75" long. A Twin XL is the same 38" width but 5 inches longer at 80". Twin XL was originally developed for college dorms and is the default size for most university dorm beds today. For children under 12 and most teenagers, a standard twin is long enough. If your teen is already over 6 feet or approaching it, Twin XL is the better long-term choice. Standard twin bedding and frames are typically less expensive and more widely available than Twin XL.

Question 3

Is a twin mattress good for adults?

Accepted Answer

A twin can work for an adult in the right context. At 38" wide it is comfortable for a single sleeper who does not move much, in a smaller room, or in a temporary or guest space. Most adults who sleep on a twin long-term find they would prefer at minimum a full (54" wide), especially if taller than 6&prime;2&Prime;. Twin is well-suited for adults using a daybed, sleeping in an RV, or outfitting a home office guest situation. For primary adult sleep, we typically recommend a full, queen, or larger.

Question 4

What is the best twin mattress for kids?

Accepted Answer

For young children (ages 3-9), a medium-firm innerspring or foam is reliable  -  firm enough for developing spines, durable enough for active kids. For pre-teens and teens, a hybrid offers better pressure relief and holds up longer. Key features: strong edge support (kids sit on edges constantly), motion isolation if they share a room or sleep on a bunk, and a washable or removable cover. We carry twin mattresses from Helix, Stearns & Foster, Tempur-Pedic, and more  -  all available to test in person at any of our 5 LA showrooms.

Question 5

What twin mattress fits a bunk bed?

Accepted Answer

Standard bunk bed frames are built for twin mattresses. The key dimension is mattress height (profile): most bunk bed manufacturers recommend a mattress no taller than 6-8 inches for the top bunk to ensure guardrail safety clearance. Low-profile foam and innerspring mattresses in the 6"-8" range are the safest and most practical choice for the top bunk. For the bottom bunk, a standard 10"-12" mattress is fine. Avoid pillow tops and thick Euro-tops on the top bunk  -  our staff can confirm which specific models fall within safe height ranges.

Question 6

How much does a twin mattress cost?

Accepted Answer

At LA Mattress Store, twin mattresses range from $299 for a quality foam or innerspring to $1,599+ for premium hybrid or latex models. The sweet spot for a durable twin that will last 7-10 years is $399-$799, where you find solid hybrids and foams. For a child’s first bed or a basic guest room, the $299-$449 range covers dependable options. All twin mattresses come with free delivery and our 120-night sleep trial.

Question 7

What room size do I need for a twin mattress?

Accepted Answer

The minimum room size for a twin mattress is approximately 7′×10′. The mattress itself is 3′2″ wide, leaving about 2 feet of clearance on each side in a 7′-wide room  -  tight but functional. The recommended room size is 8′×10′, which gives more comfortable clearance and room for a dresser or desk. For a shared kids&rsquo; room with two twins, plan for at least 10′×10′ to accommodate both beds with walkable space between them.

Question 8

What is the difference between a twin and a full mattress?

Accepted Answer

A full mattress (also called a double) is 54" wide by 75" long  -  16 inches wider than a twin and the same length. That 16" difference matters significantly for adults sharing a bed, or for a single adult who moves during sleep. For a growing child or teenager who sleeps alone, a twin is enough. For a teenager approaching adulthood or planning to use the same mattress through college, a full gives more room to grow into. Full is the smallest size we recommend for a single adult as a primary mattress.

Question 9

Does LA Mattress Store carry twin mattresses in stock?

Accepted Answer

Yes. We carry a deep selection of twin mattresses across 7+ brands, including Helix, Stearns & Foster, Tempur-Pedic, Eastman House, Englander, Diamond, and Spring Air. All major models are available to try in person at our 5 Los Angeles showrooms. Free delivery available 7 days a week, with White Glove service included on select orders. Call (800) 218-3578 or visit any showroom Mon-Sat 10am-8pm, Sun 10am-8pm.

Feature	You’re hereTwin	Twin XL	Full
Width	38"	38"	54"
Length	75"	80"	75"
vs Twin	-	5" longer	16" wider
Min room size	7′ × 10′	7′ × 10′	9′ × 10′
Recommended room	8′ × 10′	8′ × 10′	10′ × 10′
Best for	Kids, teens, bunks, dorms	Taller teens, college	Solo adults, small rooms
Price (LA)	From $299	From $349	From $329

Every twin mattress we carry,priced from $299.

A twin is 38″ wide × 75″ long.

Four ways to build a twin.

Twin Hybrid

Twin Memory Foam

Twin Latex

Twin Innerspring

Top brands in twin size.

Stearns & Foster

Tempur-Pedic

Helix

Every twin mattress in stock.

Twin vs Twin XL vs Full.

Who a twin is built for.

Kids and growing children

Teenagers up to 6'1"

Bunk beds and lofts

Guest rooms and home offices

Dorm rooms

Test every twin we carry, in person.

Why Buy From LA Mattress Store

Family-Owned Since 2012

Try Before You Buy

Free Delivery & Setup

120-Night Comfort Exchange

Every twin mattress we carry,
priced from $299.