Doubleslee 3 Inch Gel-Infused Memory Foam Mattress Topper (Kingsize, 150x200x7cm) for Cooling Comfort
Product description
Quick overview
A 3 inch memory foam mattress topper is one of those upgrades that can feel surprisingly practical: you keep your existing mattress, but change the feel on top. The Doubleslee Kingsize topper is designed around cooling comfort (via gel-infused memory foam) and pressure-point relief, with a double-layer setup you can flip for two different comfort levels.
On paper, it’s aimed at people who want a softer, more contouring surface without jumping straight to a new mattress. It also includes a washable cover and a more secure fit than you’d get from a plain foam pad, thanks to elastic straps and non-slip dots.
The essentials (what it’s meant to do)
This topper combines a knitted cover with gel-infused memory foam. The idea is that the cooling gel beads help regulate body temperature while the memory foam contours to your shape. The “zero-pressure” style support is intended to reduce pressure points and ease body fatigue, which is why it’s specifically marketed for back pain relief.
It’s also built around the idea of adaptability: the double-layer foam system can be flipped, effectively giving you two comfort feels instead of one fixed profile. So if you’re not sure whether you’ll prefer a slightly firmer or softer top feel, this is a convenient way to experiment without buying a second topper.
Worth noting: memory foam response is usually slower than springy foams, so if you sleep very hot or change position constantly, cooling claims and support feel can be a personal match rather than a guaranteed outcome.
What stands out in everyday use
The washable, hypoallergenic knitted cover is the kind of feature you only really appreciate once you’ve lived with it for a while. A premium metal zipper also makes removal for washing more straightforward than covers that are harder to get off.
Then there’s the anti-slip approach. With 4 elastic straps plus 3D anti-slip dots underneath, the topper is designed not to slide around when you toss and turn or shift sleep positions. That matters more than people think—nothing kills comfort like waking up to a topper that has crept out of place.
A practical micro-scenario: after you fit it on the bed, you should be able to sit up and move without feeling it bunch or drift. Over time, if it stays put, you’re more likely to notice the contouring and pressure relief rather than constantly correcting the position.
Cooling comfort: good concept, check your expectations
The gel-infused memory foam is intended to feel cooler and help you stay comfortable through the night. In practice, cooling performance tends to depend on room temperature, bedding layers, and personal sensitivity.
If you’re chasing the coolest possible surface, this may still be more “temperature-aware” than “air-conditioning”. It can be a sensible middle ground for many sleepers, but it might feel less effective if you already run very hot.
Also, like many compressed foam toppers, it’s delivered compressed and vacuum-sealed. The instructions say to allow about 72 hours for any packaging odour to dissipate and for the topper to fully expand, based on room temperature and ventilation.
Support and comfort for different sleeping positions
The topper is described as suitable for back, side, stomach, and combination sleepers, which is helpful because it suggests it’s not limited to one posture. The contouring nature of memory foam tends to work well for side sleepers who need pressure relief at shoulders/hips, while back sleepers often look for a balance between sinking in and maintaining spinal alignment.
However, it may not be the best fit if you want a firm, responsive surface. Memory foam is typically more “hugging” than bouncy, so those who dislike that slow-rebound feel may find it a step towards comfort softness rather than support rigidity.
Tech specs (so you’re not buying blind)
- Name: Doubleslee 3 Inch Memory Foam Mattress Topper Kingsize Bed
- Type: Mattress topper (gel-infused memory foam)
- Format: Dual-layer thick topper (flippable for two comfort levels)
- Size: Kingsize
- Dimensions: 150x200x7cm
- Height: 7cm (3 inch topper)
- Material: Gel-infused memory foam with a knitted cover
- Colour: Not specified
- Display: Not applicable
- Resolution: Not applicable
- Refresh rate: Not applicable
- Processor: Not applicable
- Memory: Not applicable
Pros and limitations to consider
On the plus side, it ticks several practical boxes: a washable knitted cover with a metal zipper, anti-slip straps and dots, and cooling-focused memory foam in a double-layer design that you can flip.
Where it can fall short depends on what you’re trying to fix. If your main issue is a mattress that feels structurally worn or sagging badly underneath, a topper can improve comfort, but it won’t replace lost mattress support. And if you’re extremely scent-sensitive, you’ll want to follow the 72-hour airing guidance before sleeping on it.
What to check before you buy
Look closely at your expectations for comfort change. A topper is best considered a comfort layer, not a full mattress replacement.
You’ll also want to think about your cooling needs: gel infusion helps with temperature regulation on paper, but results vary. Finally, confirm you’re comfortable with memory foam’s contouring feel and the slow-rebound/quick-release characteristics described.
Mini FAQ
Is this topper washable?
Yes. The cover is described as removable and designed for washing, helped by the metal zipper.
How long does it take to expand after delivery?
The guidance provided is to allow about 72 hours for slight packaging odour to dissipate and for the topper to fully expand, depending on room temperature and ventilation.
Can you change the comfort level?
It uses a dual-layer system you can flip, which is intended to give two different comfort levels.
Does it stay in place?
It’s designed to reduce sliding with 4 elastic straps and anti-slip dots underneath.
When it makes sense
It’s a solid pick if you want a cooling, contouring upgrade for an existing Kingsize mattress, especially if you’re targeting pressure relief and a softer sleep surface. The washable cover and the anti-slip setup make it more “liveable” for day-to-day use than bare foam.
Should you buy it? It’s worth considering if you’re happy to add a comfort layer and you don’t need a firm, fast-responding surface. Skip it if you’re expecting it to fix a badly sagging mattress, or if you strongly dislike the feel of memory foam (and you want something more bouncy and responsive).