wowttrelax Memory Foam Mattress, 4FT6 Double (135x190x20cm), Medium Firm Gel Foam for Back Pain Support

The essentials

If you’re looking for a pressure-relieving memory foam mattress in a double size, wowttrelax’s 4FT6 option is built around a two-layer foam approach: a gel memory foam comfort layer on top, and a high-density foam support layer underneath. The idea is simple—mould to your body for a more comfortable feel, while keeping the sleep surface supported enough for day-to-day use.

One thing to keep in mind: the brand mentions that a manual description covers both spring and memory foam mattresses, using the same instruction wording. In practice, the mattress you receive should match what’s advertised for this memory foam model, but it does mean you’ll want to double-check the product structure on delivery.

What it does well (and what you’ll notice day to day)

The most obvious selling point here is the gel memory foam layer, positioned as the main comfort component. On paper, gel memory foam is meant to contour to your shape and reduce pressure points—so in real life terms, it’s the sort of mattress you’d expect to help with “sore after sleep” sensations, especially if you tend to feel pressure around hips/shoulders.

Below that, the high-density foam support layer is intended to act like a sturdier base. The brand also talks about breathability and shock absorption from this layer, which matters if you want less of that “stuck” feeling and you prefer a mattress that still feels stable when you move.

There’s also a breathable, hypoallergenic fabric cover described with ventilation holes. If you tend to run warm overnight, this is one of those features that can genuinely help—though it’s not the same thing as having a fully breathable core throughout.

The not-so-perfect bits to weigh up

Medium firm is a useful middle ground, but it won’t suit everyone. If you strongly prefer a plush, sinking feel, you may find it a bit more “controlled” than you’d like. And if you’re expecting a very soft feel for deep pressure relief everywhere, the medium-firm balance could come off as too firm for your taste.

Also, durability claims come up, including a replacement offer if it collapses after you step on it one day—but the exact conditions aren’t detailed here. So while the pitch is reassuring, it’s worth taking a moment to understand what triggers any exchange, especially if you’re buying for long-term use.

Who it suits best (and who should look elsewhere)

It’s a sensible fit if you want a foam mattress with a comfort layer that contours, plus a support layer that aims to stay even. If you’re dealing with mild back discomfort and you like a medium-firm feel, this is the kind of mattress many people buy to try and improve sleep quality without jumping straight into the most expensive foam categories.

It may not be the best match if you need a very specific firmness level (either very soft or very firm), or if you’re someone who dislikes memory foam’s moulding feel entirely. Foam mattresses generally come down to personal preference more than spec sheets.

Practical buying checks before you commit

Before ordering, it’s worth checking a few basic things:

• Size: confirm 4FT6 double (135x190x20cm) works for your bed frame and your space.
• Setup time: the mattress is vacuum-sealed and compressed for delivery. You’ll need to wait 48–72 hours after opening for it to expand fully, which can affect when you’re able to sleep on it.
• Allergy/comfort needs: the cover is described as hypoallergenic with ventilation holes, so if that’s part of your decision, it’s worth aligning expectations with what that cover can and can’t do.

As a micro example of day-to-day use: if you sleep on your side and you tend to wake up with shoulder or hip pressure, the gel memory foam layer is the component most likely to be felt first—after a night or two, you’ll notice whether it contours enough to reduce that “pinched” feeling, or whether the support layer keeps it a little too firm.

Tech specs

• Type: Memory foam mattress (full foam system)
• Comfort layer: 4cm gel memory foam layer
• Support layer: 16cm high density foam support layer
• Size: 4FT6 double
• Dimensions: 135x190x20cm
• Firmness: Medium firm
• Fabric: Soft skin-friendly, breathable hypoallergenic fabric with ventilation holes
• Packaging: Vacuum-sealed, compressed, delivered in a compact cardboard box
• Setup guidance: Wait 48–72 hours after opening to allow full expansion

Is it worth it?

A buyable option if you want a medium-firm memory foam mattress with a gel comfort layer and a breathable, hypoallergenic cover, and you’re happy to wait for proper expansion after unboxing. It fits best for everyday sleep comfort, particularly if you’re chasing pressure relief and more reassuring support.

You may want to skip it if you know you dislike memory foam contouring, if you only like very soft beds, or if you need certainty about firmness beyond “medium firm” for your specific back comfort needs.

Mini FAQ

What does the gel memory foam layer do?

It’s designed to mould to your body and help reduce pressure, so you can feel less “stuck” in uncomfortable spots.

How long does it take to expand after unboxing?

The guidance is to wait 48–72 hours after opening so the mattress can fully expand.

Is it suitable for allergy sufferers?

The fabric is described as hypoallergenic and breathable with ventilation holes, which is the main relevant claim mentioned here.

Does it come compressed and vacuum packed?

Yes—it's vacuum-sealed and compressed in a compact cardboard box.

Does the mattress mention back pain support?

The product description includes “back pain support” in its positioning, but comfort for back issues will still depend on your body and preferred firmness.