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- 7550 W Fairview Ave
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- DELIVERY AVAILABLE
- 100 NIGHT SLEEP BETTER GUARANTEE
- FIND YOUR PERFECT MATTRESS WITH THE COMFY QUIZ
The Casper One is a reliable, all-foam mattress that delivers breathable comfort, contouring memory foam, and strong support in a clean, simple design—now available at Boise Mattress.
Price range: $599.00 through $1,119.00
Type: All-foam mattress
Firmness: Medium-firm
Height: Approximately 11 inches
Special Features: Breathe Flex breathable top foam, Align Memory Foam for pressure relief, and a durable Casper Core support base
The Casper One offers a streamlined, no-fuss sleep experience built with thoughtful engineering. Its three-layer design delivers breathability, support, and comfort without unnecessary extras. The top foam layer allows air to circulate, the middle memory foam layer hugs your body, and the sturdy base keeps everything aligned and supportive night after night. It’s ideal for sleepers who want a dependable foam mattress with balanced comfort and a medium-firm feel.
Breathe Flex Foam
A breathable top layer with open-cell design to improve airflow and reduce overheating while you sleep.
Align Memory Foam
A pressure-relieving middle layer that contours to your body and eases tension at common pressure points like shoulders and hips.
Casper Core Support Base
A dense foam foundation that resists sagging and helps maintain spinal alignment over time.
Back and stomach sleepers needing stable, consistent support
Anyone seeking a medium-firm feel with a comfortable top layer
Sleepers who want quality without the complexity or cost of hybrid systems
Bedrooms or setups where simplicity and space efficiency are key
| Size | Dimensions (W × L × H) | Ideal For |
|---|---|---|
| Twin XL | 38″ × 80″ × 11″ | Compact spaces, growing teens, dorms |
| Full | 53″ × 75″ × 11″ | Single adults who want extra room |
| Queen | 60″ × 80″ × 11″ | Most couples or adult sleepers |
| King | 76″ × 80″ × 11″ | Couples who want maximum space |
| California King | 72″ × 84″ × 11″ | Taller individuals or large bedrooms |
Mattress Type: All-foam
Layers: Breathe Flex foam, Align Memory Foam, Casper Core support base
Height: 11 inches
Feel: Medium-firm
Cooling: Breathable foam top layer for airflow
Edge Support: Moderate
Warranty: 10-year limited warranty
Shipping: Ships compressed in a box, expands in 24–72 hours
Trial: 100-night risk-free trial
Q1: Is this mattress firm or soft?
The Casper One has a medium-firm feel—supportive enough for back and stomach sleepers, with just enough cushion to stay comfortable.
Q2: Does this mattress sleep hot?
While it’s an all-foam mattress, the breathable Breathe Flex top layer is designed to allow airflow and help manage heat retention.
Q3: Is it good for side sleepers?
Lighter side sleepers may find it comfortable, but those who prefer a plush, deeper sink may want a softer option for pressure relief.
Q4: What foundation works best with this mattress?
It’s compatible with any sturdy, flat base including platform beds, adjustable bases, or traditional box springs designed for foam mattresses.
Q5: How long should I wait before sleeping on it?
Let the mattress fully expand for 24 to 72 hours after unboxing before using it.
Try the Casper One today at Boise Mattress and find out how supportive, breathable foam can transform your night’s sleep. Stop by and test it out in person.
