Tanzanite Sleep Mattress
Price range: £159.99 through £389.99
The Sienna Bed Mattress, Engineered for the Sleep You Actually Need
Most mattresses promise a lot. The Sienna Bed Mattress delivers it, with a layered foam construction that works with your body rather than against it, keeping you supported, cool, and comfortable from the moment you lie down to the moment you wake up.
It’s a medium-feel mattress built for sleepers who need proper spinal alignment without a rigid surface. Pressure relief, temperature regulation, and long-term durability are built into every layer.
What’s Inside: Three Layers, One Purpose
The Sienna isn’t a single-foam mattress with a fancy cover. It’s a carefully ordered tri-layer system in which each component performs a specific job.
- 175mm Reflex Foam is the structural core. Dense and resilient, it provides the foundational support your spine needs for proper alignment, regardless of your sleep position.
- 25mm GelFlex Layer, the transition zone. Sits between the support core and the sleep surface, softening the feel without compromising the structure underneath.
- 50mm CoolBlue Memory Foam is the sleep surface. Conforms to your body’s contours to distribute weight evenly and relieve pressure at the hips, shoulders, and lower back. The CoolBlue technology draws heat away from the body, so you stay cooler than you would on a standard memory foam mattress.
The result is a mattress that responds to you, adapting to your shape, absorbing movement, and maintaining a stable, supportive feel across the entire sleep surface.
Built for Wellbeing, Not Just Comfort
- Hypoallergenic construction, suitable for allergy and asthma sufferers, with materials that resist the dust mite build-up common in older spring-only mattresses.
- Removable, zipped cover, easy to unzip and wash, keeping your sleep surface fresh without the effort of a full mattress clean.
- The turnable design with handles rotates the mattress seasonally, extending its lifespan and preventing uneven wear. The handles make this a one-person job.
- The Bonnell spring unit adds durability and bounce to the support layer, giving the mattress a responsive feel underfoot.
- Stretch-knit soft-touch cover and breathable fabric that work with the CoolBlue layer to maintain airflow and prevent heat from building up overnight.
Who Is the Sienna For?
The Sienna suits most sleepers, but it’s a particularly good match if you:
- Run warm at night and find standard memory foam too hot
- Need pressure relief at the shoulders or hips, but don’t want a mattress that feels like you’re sinking
- Suffer from allergies or asthma and need a hypoallergenic option
- Want a low-maintenance mattress with a washable cover and a turnable design
It works well paired with upholstered bed frames that use a slatted base, and is suitable for ottoman divans.
Dimensions
Free UK delivery. 30-night risk-free trial. 3-year warranty. If the Sienna isn’t right for you within the first 30 nights, we’ll collect it and refund you in full, no questions asked.
Frequently Asked Questions (FAQ’s)
Yes. The CoolBlue memory foam layer is specifically designed to dissipate heat, and the stretch-knit cover adds airflow at the surface. It sleeps noticeably cooler than a standard memory foam mattress.
Yes. The Sienna works well on both slatted bases and solid divan platforms. If you’re pairing it with one of our ottoman divans, no additional base is required.
Every 3 to 6 months is sufficient. The built-in handles make it straightforward to do on your own. Regular rotation prevents body impressions from forming and extends the mattress’s lifespan.
The zipped cover is removable. Always check the care label before washing, but it’s designed for easy home maintenance.
It covers any defects in materials or artistry from the date of delivery, including structural issues with the foam layers. It does not cover normal wear or damage caused by misuse.
