Buying Guide
How to choose the right mattress
Match firmness to how you sleep, pick the right size, and compare our models side by side.
1. Firmness by sleeping position
| Position | Best feel | Why |
|---|---|---|
| Side sleeper | Soft to medium | Cushions shoulders and hips while keeping the spine straight. |
| Back sleeper | Medium-firm | Supports the lower back without pushing it up. |
| Stomach sleeper | Firm | Stops the hips sinking and straining the lower back. |
| Combination sleeper | Medium | Balanced feel that works in every position. |
2. Firmness by body weight
A general guide. Heavier sleepers sink deeper and usually need firmer support.
| Body weight | Suggested feel |
|---|---|
| Under 60 kg | Soft to medium |
| 60 to 90 kg | Medium-firm |
| Over 90 kg | Firm, with a dense support core |
3. Size chart
| Size | Dimensions (length x width) |
|---|---|
| Single | 72 x 36 in · 75 x 36 in · 78 x 36 in |
| Double | 72 x 48 in · 75 x 48 in · 78 x 48 in |
| Queen | 72 x 60 in · 75 x 60 in · 78 x 60 in |
| King | 72 x 72 in · 75 x 72 in · 78 x 72 in |
4. Compare SleepUp mattresses
Before you buy
- Choose a length at least 6 to 8 inches longer than your height.
- Allow about 25 nights to adjust; a long home trial lets you judge properly.
- Read the warranty terms so you know exactly what is covered.
- If your bed frame is non-standard, order a custom size rather than forcing a fit.
Want more detail? Read our full buying guide article.
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