01
Start with the room
Measure the bed wall, walkways, drawers, and door swing first. A larger mattress only feels better when the room still moves comfortably.
Sleepmax Guide
Mattress Size Chart & Bed Dimensions
Find the size that fits your room, your body, and the way you actually sleep.
Compare the Sleepmax sizes we actually offer, then choose based on your room, your body height, and how much space you share.
Use these quick links to jump to each part of the guide:
Quick answer
Queen is the easiest fit for most bedrooms.
Choose King for more shared space, Twin or Full for compact rooms, and Ultra for extra-long, oversized sleep setups.
Sleepmax Mattress Size Chart
A single reference table for the sizes available from Sleepmax.
Swipe right to compare more details. The size column stays fixed while the rest of the table scrolls.
| Size | Dimensions | Best For | Room Fit | Notes |
|---|---|---|---|---|
| Twin | 38" x 75" | Kids, bunks, smaller rooms | 7 ft x 10 ft | Compact |
| Full | 54" x 75" | Single sleepers wanting more width | 10 ft x 12 ft | Single upgrade |
| Queen | 60" x 80" | Most couples, guest rooms, apartments | 10 ft x 12 ft | Most popular |
| King | 76" x 80" | Couples wanting more personal space | 13 ft x 13 ft | Wider |
| Ultra | 78.7" x 86.6" | Taller sleepers, oversized comfort, statement bedrooms | 13 ft x 14 ft or larger | Ultra size |
A Simpler Way to Choose
Start with the space, then decide how much room your body and sleep routine actually need.
02
Match body height and movement
Twin and Full keep rooms efficient. Queen works for most setups. King and Ultra give active sleepers, taller bodies, and shared beds more breathing room.
03
Plan for who shares the bed
Couples can usually start at Queen. Add pets, kids, or very different sleep schedules, and King or Ultra becomes easier to justify.
Ready to find your Sleepmax fit?
Choose a mattress designed for pressure relief, cooling comfort, and full-body support.
Twin size
Compact support for kids, bunks, and smaller rooms.
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Full size
More width for solo sleepers without taking over the room.
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Queen size
The most flexible size for most bedrooms and couples.
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King size
More personal space for couples, families, and pets.
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Ultra size
Approx. 79" x 87" oversized comfort for taller bodies and bigger rooms.
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