SleepMaker Cocoon Silver Firm
Pocket spring mattress with cooling KülKōte and Comfort:Edge support, firm 8/10 feel
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Overview
The SensorZone® system, explained
The Cocoon Silver Firm is built around the SensorZone® spring system — a spring core designed to respond to your body for support that adapts to you, with stable, even support across the bed and minimal partner disturbance when you share. A breathable Climatex® quilt with temperature-reactive KülKōte tops it off, and a solid Comfort:Edge foam surround supports the mattress right to its edges. Delivered as a conventional, uncompressed mattress.
Responsive support
SensorZone® springs respond to your body for support that adapts to you.
Stable & undisturbed
Stable, even support with minimal partner disturbance when you share.
Edge-to-edge support
A solid Comfort:Edge foam surround supports the full sleep surface.
The Cocoon Silver Firm is for you if…
You want a firm, supportive feel
The Cocoon Silver Firm sits at a firm 8/10.
You share the bed
The SensorZone® spring system is designed for minimal partner disturbance.
You sleep warm
A breathable Climatex® quilt and temperature-reactive KülKōte help manage heat.
You use the full surface
The Comfort:Edge foam surround supports right to the sides.
Feel & firmness
How firm is it, and who is it for?
The Cocoon Silver Firm has a medium feel — around 5 on a 1 to 10 scale — sitting between soft and firm. Firmness is subjective — how firm a mattress feels can vary with body weight and sleeping position.
Firm· 8 / 10
Suits
- Back sleeperssupport through the lower back
- Side sleeperscushioning at the shoulders and hips
Firmness is subjective — how firm a mattress feels varies with body weight and sleeping position. We recommend trying it in person at one of our five SE QLD showrooms before you decide.
Next
Inside the mattressWhat you are actually sleeping on
Climatex® quilt with KülKōte
Breathable high-loft quilt with temperature-reactive KülKōte
SensorZone® spring core
Spring system tuned for support, stability and minimal partner disturbance
Comfort:Edge surround
Solid foam edge supporting the full sleep surface
Total height
Dimensions & specificationsEvery number we can stand behind
| Type | Pocket spring with comfort quilt top |
|---|---|
| Firmness | Firm · 8 / 10 |
| Total height | 29 cm |
| Support core | SensorZone® spring system with Comfort:Edge foam edge support |
| Comfort layers | Climatex® quilt with KülKōte |
| Treatment | Ultra-Fresh® treated |
| Sided | Single-sided — do not flip; rotate head-to-foot |
| Mattress size (selected) | 92 × 188 cm |
| Delivered | Conventional, uncompressed mattress |
| Warranty | 10 years |
Sizes follow SleepMaker standard mattress dimensions. We haven't published a spring count for this model — call 07 3161 5415 if you need that figure before ordering.
🧭Room clearance
Allow 60–75 cm around the piece to move comfortably; remember the frame footprint runs a few cm larger than the mattress.
🚙Pickup vehicle
For free Rocklea pickup, a flat-pack fits most cars, but an assembled or oversized item needs a van, ute or trailer.
Australian size chart
| Size | Mattress size (W × L) |
|---|---|
| Single | 92 × 187 cm |
| King Single | 106 × 203 cm |
| Double | 137 × 187 cm |
| Queen | 153 × 203 cm |
| King | 183 × 203 cm |
| Super King | 203 × 203 cm |
Australian sizes differ from US and UK — always check the centimetre dimensions, not just the name. Unsure which to choose? Read our Australian bed sizes guide.
Materials & careLooking after it
- Comfort layers
- Climatex® quilt with KülKōte
- Support core
- SensorZone® spring system with Comfort:Edge foam edge support
- Treatment
- Ultra-Fresh® treated
- Total height
- 29 cm
- Sided
- Single-sided — rotate head-to-foot, never flip
- Warranty
- 10 years
Care instructions
Rotate regularly
Turn it head-to-foot every few months to help it wear evenly.
Use a protector
Keeps the cover cleaner and guards against everyday spills.
Let it breathe
Air it out from time to time and keep the room well ventilated.
Spot clean only
Damp cloth and mild cleaner; avoid soaking or harsh chemicals.
Recommended care products
Delivery & pickupGetting it to you
Delivery cost depends on distance. Free local delivery to eligible addresses near Rocklea — terms apply.
Estimate delivery to your postcode
Estimate shipping
From our Rocklea distribution warehouse, by appointment.
Base & frame
What base does this mattress need?
The most common question we get on a mattress — and the one most listings never answer.
Bases this mattress suits
Use it on a solid or platform base, a slatted base with evenly spaced slats. The surface underneath needs to be flat and fully supportive across the whole mattress — no box spring required.
Slat spacing
As a general industry guide, slat gaps of more than about 7.5 cm can leave a mattress under-supported and may affect your warranty. If you are not sure what your base measures, send us a photo or call 07 3161 5415 and we will check it with you before you order.
Need a frame to match?
Every Australian size pairs with a frame of the same name — a Single mattress goes in a Single frame. Browse matching bed frames →
An unsupportive or incorrectly spaced base can affect both comfort and your warranty — see the warranty section below.
Warranty10-year warranty & your rights
Your mattress is covered against manufacturing faults in materials and workmanship for 10 years from the date of purchase.
What the warranty does not cover
- Damage caused by an unsupportive base — a sagging base, or slats spaced too far apart. See “What base does this need?” above.
- The gradual softening and body impressions that all comfort layers develop with normal use. This is expected settling, not a fault.
- Damage from misuse, standing or jumping on the mattress, bending or folding it, or moving it without proper support.
- A change of mind about comfort or firmness. Firmness is personal, so please try it at one of our showrooms before you buy.
No online trial — something better. Firmness is personal and no amount of online description settles it. Lie on this mattress at any of our five SE QLD showrooms — Rocklea, Virginia, Bundall, North Ipswich and Beenleigh — and buy it knowing exactly how it feels.
This warranty is in addition to your rights under Australian Consumer Law. Our goods come with guarantees that cannot be excluded under the Australian Consumer Law. You are entitled to a replacement or refund for a major failure, and to compensation for any other reasonably foreseeable loss or damage. You are also entitled to have the goods repaired or replaced if the goods fail to be of acceptable quality and the failure does not amount to a major failure.
ReviewsWhat buyers say
FAQ
Questions we get asked
It has a medium feel — around 5 on a 1 to 10 scale — sitting between soft and firm. That suits sleepers who want a balanced surface that isn't too plush or too hard. Firmness is subjective, so we'd suggest trying it in person at one of our five SE QLD showrooms.
It's designed with warmer sleepers in mind. The breathable Climatex® quilt lets the surface breathe, and temperature-reactive KülKōte absorbs and releases heat to help manage the surface temperature as you sleep.
Yes. A solid Comfort:Edge foam surround runs around the pocket springs, supporting the mattress right to the sides. That gives you more usable surface and helps reduce the feeling of rolling off the edge.
Use it on a solid (platform) base or a slatted base with evenly spaced slats, so the mattress is supported evenly across its full size. An unsupportive base can affect comfort and may affect your warranty.
Single (92 × 188 cm), King Single (107 × 203 cm), Double (137 × 188 cm), Queen (153 × 203 cm), King (183 × 203 cm) and Super King (203 × 203 cm).
No. The Cocoon Silver Firm is single-sided, with the comfort layers on top, so it isn't designed to be flipped. Rotate it head-to-foot every few months to help it wear evenly.
Yes — and we would rather you did. We do not run an online sleep trial. The Cocoon Silver Firm is on display across our five SE QLD showrooms in Rocklea, Virginia, Beenleigh, Bundall (Gold Coast) and North Ipswich. For change-of-mind and faults, see our warranty and returns policy — your rights under Australian Consumer Law always apply on top of any warranty.
Full detailsSleepMaker Cocoon Silver Firm — full product details
The SleepMaker Cocoon Silver Firm is a pocket spring mattress built on the SensorZone® spring system, which is tuned for stable, responsive support with minimal partner disturbance. A breathable Climatex® quilt with temperature-reactive KülKōte tops the mattress for a cooler surface, and a solid Comfort:Edge foam surround supports it right to its edges. Our mattress buying guide covers firmness, spring structure and materials in more detail.
With a medium 5 out of 10 feel, the Cocoon Silver Firm suits sleepers who want a balanced surface with cooling comfort and supportive edges, and an Ultra-Fresh® treatment helps the mattress stay fresh through everyday use. It comes in five Australian Standard sizes: Single, King Single, Double, Queen and King.
Backed by a 10-year warranty, the Cocoon Silver Firm works on any solid (platform) or slatted base. Pair it with a waterproof mattress protector, and browse our pocket spring and medium-firm mattress ranges. Or come and try it at one of our five South-East Queensland showrooms in Rocklea, Virginia, Beenleigh, Bundall and North Ipswich.




