# BONNVIA BMT1 Double Mattress Topper, 7cm

BONNVIA BMT1 is a 7cm double mattress topper with a two-foam design and a bamboo-fibre blend cover. Its stated 135x190cm size suits a UK double bed, while the two comfort sides, adjustable straps and removable washable cover add flexibility for buyers refreshing an existing mattress.

- [Original product page](https://bargainpostbox.co.uk/product/bonnvia-bmt1-double-mattress-topper-7cm)
- [View offer](https://bargainpostbox.co.uk/visit/bonnvia-bmt1-double-mattress-topper-7cm)
- Market: UK
- Language: en-GB
- Currency: GBP
- Brand: BONNVIA
- Model: BMT1
- Price: 65.99 GBP
- Previous price: 109.99 GBP
- Discount: 40%
- Price checked: 2026-11-12T18:44:29.061Z
- Rating: 4.6 / 5
- Reviews: 980

Prices and deal status are the latest recorded data, not a guarantee of availability. Confirm the price and availability with the store.

## At a glance

- The 7cm topper uses memory foam and support foam, with the listing describing a flip design for two comfort levels.
- The cover is listed as 38% bamboo fibre and 62% polyester and can be removed for machine washing.
- Adjustable straps are intended to help secure the topper to the mattress.
- The listing claims OEKO-TEX and CertiPUR-US certifications. Check the selected listing for applicable certification details.

## Pros

- Two stated comfort sides give buyers an option to change the feel without replacing the topper.
- A removable machine-washable cover is practical for routine care. The foam itself should not be washed.
- Its stated double dimensions and adjustable straps suit buyers seeking a topper to fit a 135x190cm bed.

## Cons

- The topper is explicitly listed as not water resistant, so it does not replace a waterproof protector.
- The foam is not washable, leaving cleaning dependent on the removable cover.

## Specifications

### Identity and size
- Brand: BONNVIA
- Model: BMT1
- Size: 4ft6 Double - 135x190cm
- Displayed dimensions: 190 x 135 x 7 centimetres
- Colour: Gray
### Materials and care
- Material listed: Topper Foam Core: Bonnvia Memory Foam + Bonnvia Support Foam; Topper Cover: 38% Bamboo Fibre + 62% Polyester
- Water resistance listed: Not Water Resistant
- Care instructions: Topper Cover: Machine Wash, Topper Foam: Do not wash
- Cover closure: Zipper
- Thread count: 400
### Other listed details
- Special features: Adjustable, Cooling, Hypoallergenic, Washable
- Age range: Adult
- Country of origin: China
- Model number: BMT1-135x190
- Number of items: 1
- Item type: Memory Foam
- Warranty description: 100 Nights Trial & 10 Years Warranty from the Date of Purchase

## Before you buy

- Customer feedback is mixed on odour. Some report little smell, while others describe a strong unpleasant odour, so this may matter to odour-sensitive buyers.
- The listing describes a two-sided comfort design and states a 7cm thickness. Customer feedback includes a report that the topper puffed up to that thickness, but this is not a measurement for every unit.
- The listing states a 100-night trial and a 10-year warranty. Review the selected listing for the terms and eligibility before purchase. The claimed OEKO-TEX and CertiPUR-US certifications are listing claims.

## In the box

- Mattress topper (Included)
- Removable cover (Included)

## A good fit for

- Double-bed owners wanting a 7cm foam topper with two stated comfort sides.
- Buyers who prefer a removable, machine-washable cover and adjustable securing straps.
- People seeking to alter the feel of an existing mattress rather than replace it.

## Less suited to

- Buyers needing a waterproof layer or a foam topper that can itself be washed.
- Anyone who needs certainty about odour before purchase, as customer reports differ.

## Customer feedback

Customer feedback highlights reported improvements to sleep quality and support, with some customers appreciating the balance of softness and firmness and saying the topper stays in place. Others describe its odour very differently, ranging from little smell to a strong unpleasant one. These are customer perceptions, not guaranteed outcomes. The reported fit and stability are relevant to the listed 135x190cm size and adjustable straps, while the odour variation is worth considering if you are sensitive to smells.
- Positive themes: Customers report improved sleep quality and support, and some appreciate the softness-firmness balance.
- Positive themes: Some customers say the topper stays in place and reaches the stated thickness.
- Negative themes: Some customers report a strong unpleasant odour, contrasting with reports of very little smell.
- Mixed feedback: Customer reports of odour vary substantially.

## Frequently asked questions

### What size bed does the BONNVIA BMT1 fit?
The listing gives the size as 4ft6 Double - 135x190cm.
### Can the topper be flipped for a different feel?
The listing describes a two-in-one design with memory foam and support foam, and says flipping it offers two comfort levels.
### Can I wash the whole topper?
No. The care details say the cover is machine washable and the foam should not be washed.
### Is this topper waterproof?
No. It is listed as not water resistant.
### What do customers say about its odour?
Feedback is mixed. Some customers report very little smell, while others mention a strong unpleasant odour.

## Alternative options

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- [BEDLORE Double Mattress Topper, 2-in-1 Dual Layer Design Memory Foam Pad \| Breathable, Deep Pocket, Bamboo Fabric, OEKO-TEX, Pressure Relief, Machine Washable](https://bargainpostbox.co.uk/visit/bonnvia-bmt1-double-mattress-topper-7cm)
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- [FRIDEKO HOME Memory Foam Mattress Topper Double Bed, 7cm Thick, 135x190cm \| Orthopedic Double Mattress Topper with Dual-Layer for Back Pain Relief, Washable Cover & Elastic Straps, 100-Night Trial](https://bargainpostbox.co.uk/visit/bonnvia-bmt1-double-mattress-topper-7cm)
- [Doubleslee 3 Inch Memory Foam Mattress Topper Double Bed Thick 135x190x7cm \| Gel-Infused Cooling Orthopedic Double Mattress Topper for Back Pain Relief, Think With Elastic Straps & Washable Cover](https://bargainpostbox.co.uk/visit/bonnvia-bmt1-double-mattress-topper-7cm)
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## Add-ons

- [Caroline Shatuik 100% Waterproof Mattress Protector Double-30cm Extra Deep Stretch Skirt Non-Noisy Terry Top Fitted Mattress Protector Double Bed Cover\(137x190cm\)](https://bargainpostbox.co.uk/visit/bonnvia-bmt1-double-mattress-topper-7cm)

## Images

![BONNVIA BMT1 Double Mattress Topper, 7cm — 1](https://bargainpostbox.co.uk/i/XvsB59skCjxIDJPi5ot1Z5wWaQ5RhHRj4cAqYbo3GpkJ7_Jw6temwYsOQ0jY6wNXoioZAvQz8Olh_DRPoMYo2u5hDt8YsE30a1o-UdH__jE0nsN0Evl0wPrJ.jpg)

![BONNVIA BMT1 Double Mattress Topper, 7cm — 2](https://bargainpostbox.co.uk/i/FwT40iwokLnWIvnXaaMxu1p_CDbSWkml1jxTZkhqZeoWO-mj4bAGu00jzZJcHzSBkw9lGpcH3UjtBYt8XiI1j1z9UVcAyCWLERHReudm-3pHmgHeeV5tPrSx.jpg)

![BONNVIA BMT1 Double Mattress Topper, 7cm — 3](https://bargainpostbox.co.uk/i/Rw7qYM498ZTBl0thuKYq655CzRn7gTk8GY38ZAsYQqg-XuyL7UR_YXv-QvVhl5B2ALIcM8RV2snFtY9vXeZQemcPfVInqNc-HxB_qTK-6DXQ3FxS8pcHiCec.jpg)

![BONNVIA BMT1 Double Mattress Topper, 7cm — 4](https://bargainpostbox.co.uk/i/luXg_WFalL_DAPPVlHuh8_GIF3ozxvW93PMP0Dq6QzqwJvVuE14wS7WBgC75ohUyfs51OiZxlLH-z78jLhgBcccuIELeaMkS_k4PI4F2wYSmb4KPZDtUGJYf.jpg)

![BONNVIA BMT1 Double Mattress Topper, 7cm — 5](https://bargainpostbox.co.uk/i/m1wL2tF3kOF-pK9hcs4TaxeLdWNkPaUmOWw4v_WaRnyzWk4NjTbqUPJS3phSGCoDpcj8BiwO4vMEHQ0i2G6jQ8pqdKD3RdHiW_N61FQ71JSERRWGP0vg-NqN.jpg)

![BONNVIA BMT1 Double Mattress Topper, 7cm — 6](https://bargainpostbox.co.uk/i/WDlY5_5kX9vXyYvCi68t1TEGn5nQsrh3S5geOnLOT_t_r8qif689qWb_7XRlWPTuptSK533o0PC69fk5jeIdHv0pts4E3VZIGA7a9o_kTnsWU6wDaOy4ZlQA.jpg)

![BONNVIA BMT1 Double Mattress Topper, 7cm — 7](https://bargainpostbox.co.uk/i/SOi5EE5dsCrHIovyTCQsZjXIUPhj8cbB741laZoW7CrJkjK6xARMQTxEE_-wjQ_kD7T-DhhB21FHaqtf4nCl4c7xmM7zZumKAanDdxNeqnLWxWP03xDX5nyU.jpg)