Rank #4 in Best Super King Mattress 2026: 10 Ranked, One Claims 2,000 Springs
Slily 12 Inch Pocket Sprung Hybrid Mattress, 30 cm
Price and rating as shown on Amazon when we collected them. Both change.
slily's 12 inch super king mattress is a hybrid: a pocket sprung base with a memory foam top layer over it. It is sold at £220.99 in a 180 x 200 x 30 cm size and it takes fourth place in this guide. The listing describes a 7-zone spring system, a medium firm feel, reinforced edges, a 3D breathable knitted cover and a maximum weight capacity of 250 kg. It carries a 4.5 rating from 1,077 Amazon customer ratings.
The coil claim is the number that sets this listing apart: 2,000 pocketed coils, against the 868 claimed by the mattress at £143.64 and the 600 claimed by the £829 one. The same listing then states an item weight of 17 g and item dimensions of 100 x 30 x 30 centimetres, which do not sit comfortably with a 180 x 200 x 30 cm hybrid. Everything on this page is taken from the Amazon listing itself. We have not tested this mattress.
How those 1,077 ratings break down
An average hides its own shape. This is the spread behind the 4.5 stars.
Specification
Exactly as published on the Amazon listing, field for field.
| Price | £220.99 |
|---|---|
| Amazon rating | 4.5 out of 5 from 1,077 ratings |
| Claimed mattress coils | 2,000 pocketed coils (as listed) |
| Item weight | 17 g (as listed) |
| Number of layers | 2 |
| Construction | Hybrid — pocketed coil base with memory foam top layer |
| Size | Super king, 180 x 200 x 30 cm |
| Maximum weight capacity | 250 kg |
What buyers actually say
Quoted from customer reviews on Amazon
Verified purchase“I've been really pleased with this mattress so far. It has a good balance of comfort and support, and the medium firm feel suits me well. The memory foam layer feels comfortable without being too soft, while the pocket springs provide good support. I also like the 7 zone design, which seems to provide a nice level of support across the mattress. It feels well made, and the 30cm depth gives the bed a substantial, comfortable feel.Overall, it's comfortable, supportive and good value for the price. I'm happy with my purchase.”
Verified purchase“Too early to say or give an in depth review but after 1 week it really is a lovely mattress to sleep on, I was very sceptical about a rolled up hybrid mattress and at such a good priceBut early assessment its definitely good value for money and very comfortable for me and the wife who are both side sleepers”
What it is up against
The rivals it was ranked against in Best Super King Mattress 2026: 10 Ranked, One Claims 2,000 Springs.
Questions people ask
How many pocket springs does the slily mattress have?
The listing states 2,000 pocketed coils, the highest coil count claimed by any hybrid in this guide.
How much does the slily 12 inch super king mattress weigh?
The Item Weight field says 17 g, which does not fit a 180 x 200 x 30 cm hybrid mattress, and no other weight is given in the listing.
Is the slily mattress medium or firm?
It is described as medium firm, with Medium given under Firmness Description, and a memory foam top layer over the pocket springs.
What is the maximum weight the slily mattress supports?
The listing gives a maximum weight capacity of 250 kilograms.
Does the slily mattress arrive rolled up?
Yes. It is shipped compressed, vacuum-sealed and rolled; the listing asks you to wait 2-3 days after opening, keep the room ventilated, and allow a week to get used to it.
Is there a trial period on the slily mattress?
The listing mentions a 100 night trial for the 180 x 200 cm mattress.
Comments
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