• SK-2601 31 cm Medium Soft 5-Zone Pocket Spring Mattress with Lumbar Support, 2.5 cm Gel Memory Foam Quilted 350gsm Jacquard Knit Cover, 7 cm High-Density Foam Encased Edge, Non-Slip Base, Roll-Packed (Queen)
  • SK-2601 31 cm Medium Soft 5-Zone Pocket Spring Mattress with Lumbar Support, 2.5 cm Gel Memory Foam Quilted 350gsm Jacquard Knit Cover, 7 cm High-Density Foam Encased Edge, Non-Slip Base, Roll-Packed (Queen)
  • SK-2601 31 cm Medium Soft 5-Zone Pocket Spring Mattress with Lumbar Support, 2.5 cm Gel Memory Foam Quilted 350gsm Jacquard Knit Cover, 7 cm High-Density Foam Encased Edge, Non-Slip Base, Roll-Packed (Queen)
  • SK-2601 31 cm Medium Soft 5-Zone Pocket Spring Mattress with Lumbar Support, 2.5 cm Gel Memory Foam Quilted 350gsm Jacquard Knit Cover, 7 cm High-Density Foam Encased Edge, Non-Slip Base, Roll-Packed (Queen)
  • SK-2601 31 cm Medium Soft 5-Zone Pocket Spring Mattress with Lumbar Support, 2.5 cm Gel Memory Foam Quilted 350gsm Jacquard Knit Cover, 7 cm High-Density Foam Encased Edge, Non-Slip Base, Roll-Packed (Queen)
  • SK-2601 31 cm Medium Soft 5-Zone Pocket Spring Mattress with Lumbar Support, 2.5 cm Gel Memory Foam Quilted 350gsm Jacquard Knit Cover, 7 cm High-Density Foam Encased Edge, Non-Slip Base, Roll-Packed (Queen)
  • SK-2601 31 cm Medium Soft 5-Zone Pocket Spring Mattress with Lumbar Support, 2.5 cm Gel Memory Foam Quilted 350gsm Jacquard Knit Cover, 7 cm High-Density Foam Encased Edge, Non-Slip Base, Roll-Packed (Queen)
  • SK-2601 31 cm Medium Soft 5-Zone Pocket Spring Mattress with Lumbar Support, 2.5 cm Gel Memory Foam Quilted 350gsm Jacquard Knit Cover, 7 cm High-Density Foam Encased Edge, Non-Slip Base, Roll-Packed (Queen)
  • SK-2601 31 cm Medium Soft 5-Zone Pocket Spring Mattress with Lumbar Support, 2.5 cm Gel Memory Foam Quilted 350gsm Jacquard Knit Cover, 7 cm High-Density Foam Encased Edge, Non-Slip Base, Roll-Packed (Queen)
  • SK-2601 31 cm Medium Soft 5-Zone Pocket Spring Mattress with Lumbar Support, 2.5 cm Gel Memory Foam Quilted 350gsm Jacquard Knit Cover, 7 cm High-Density Foam Encased Edge, Non-Slip Base, Roll-Packed (Queen)
  • SK-2601 31 cm Medium Soft 5-Zone Pocket Spring Mattress with Lumbar Support, 2.5 cm Gel Memory Foam Quilted 350gsm Jacquard Knit Cover, 7 cm High-Density Foam Encased Edge, Non-Slip Base, Roll-Packed (Queen)
  • SK-2601 31 cm Medium Soft 5-Zone Pocket Spring Mattress with Lumbar Support, 2.5 cm Gel Memory Foam Quilted 350gsm Jacquard Knit Cover, 7 cm High-Density Foam Encased Edge, Non-Slip Base, Roll-Packed (Queen)
  • SK-2601 31 cm Medium Soft 5-Zone Pocket Spring Mattress with Lumbar Support, 2.5 cm Gel Memory Foam Quilted 350gsm Jacquard Knit Cover, 7 cm High-Density Foam Encased Edge, Non-Slip Base, Roll-Packed (Queen)
  • SK-2601 31 cm Medium Soft 5-Zone Pocket Spring Mattress with Lumbar Support, 2.5 cm Gel Memory Foam Quilted 350gsm Jacquard Knit Cover, 7 cm High-Density Foam Encased Edge, Non-Slip Base, Roll-Packed (Queen)
  • SK-2601 31 cm Medium Soft 5-Zone Pocket Spring Mattress with Lumbar Support, 2.5 cm Gel Memory Foam Quilted 350gsm Jacquard Knit Cover, 7 cm High-Density Foam Encased Edge, Non-Slip Base, Roll-Packed (Queen)
  • SK-2601 31 cm Medium Soft 5-Zone Pocket Spring Mattress with Lumbar Support, 2.5 cm Gel Memory Foam Quilted 350gsm Jacquard Knit Cover, 7 cm High-Density Foam Encased Edge, Non-Slip Base, Roll-Packed (Queen)
  • SK-2601 31 cm Medium Soft 5-Zone Pocket Spring Mattress with Lumbar Support, 2.5 cm Gel Memory Foam Quilted 350gsm Jacquard Knit Cover, 7 cm High-Density Foam Encased Edge, Non-Slip Base, Roll-Packed (Queen)
  • SK-2601 31 cm Medium Soft 5-Zone Pocket Spring Mattress with Lumbar Support, 2.5 cm Gel Memory Foam Quilted 350gsm Jacquard Knit Cover, 7 cm High-Density Foam Encased Edge, Non-Slip Base, Roll-Packed (Queen)
  • SK-2601 31 cm Medium Soft 5-Zone Pocket Spring Mattress with Lumbar Support, 2.5 cm Gel Memory Foam Quilted 350gsm Jacquard Knit Cover, 7 cm High-Density Foam Encased Edge, Non-Slip Base, Roll-Packed (Queen)
  • SK-2601 31 cm Medium Soft 5-Zone Pocket Spring Mattress with Lumbar Support, 2.5 cm Gel Memory Foam Quilted 350gsm Jacquard Knit Cover, 7 cm High-Density Foam Encased Edge, Non-Slip Base, Roll-Packed (Queen)
  • SK-2601 31 cm Medium Soft 5-Zone Pocket Spring Mattress with Lumbar Support, 2.5 cm Gel Memory Foam Quilted 350gsm Jacquard Knit Cover, 7 cm High-Density Foam Encased Edge, Non-Slip Base, Roll-Packed (Queen)
  • SK-2601 31 cm Medium Soft 5-Zone Pocket Spring Mattress with Lumbar Support, 2.5 cm Gel Memory Foam Quilted 350gsm Jacquard Knit Cover, 7 cm High-Density Foam Encased Edge, Non-Slip Base, Roll-Packed (Queen)
  • SK-2601 31 cm Medium Soft 5-Zone Pocket Spring Mattress with Lumbar Support, 2.5 cm Gel Memory Foam Quilted 350gsm Jacquard Knit Cover, 7 cm High-Density Foam Encased Edge, Non-Slip Base, Roll-Packed (Queen)
  • SK-2601 31 cm Medium Soft 5-Zone Pocket Spring Mattress with Lumbar Support, 2.5 cm Gel Memory Foam Quilted 350gsm Jacquard Knit Cover, 7 cm High-Density Foam Encased Edge, Non-Slip Base, Roll-Packed (Queen)

SK-2601 31 cm Medium Soft 5-Zone Pocket Spring Mattress with Lumbar Support, 2.5 cm Gel Memory Foam Quilted 350gsm Jacquard Knit Cover, 7 cm High-Density Foam Encased Edge, Non-Slip Base, Roll-Packed (Queen)

No.SK-2601
A quieter way to sleep. The Rucai ZEN 31 cm pocket spring mattress pairs a 5-zone lumbar support coil system with 2.5 cm of gel-infused memory foam, quilted beneath a 350gsm jacquard knit cover. A 7 cm high-density foam encasement holds all four sides firm. Medium-soft, single-sided and roll-packed in one carton — designed to sit just as well on a low platform frame as on a standard bed.
$135.50
  • SK-2601 31 cm Medium Soft 5-Zone Pocket Spring Mattress with Lumbar Support, 2.5 cm Gel Memory Foam Quilted 350gsm Jacquard Knit Cover, 7 cm High-Density Foam Encased Edge, Non-Slip Base, Roll-Packed (Queen)
  • SK-2601 31 cm Medium Soft 5-Zone Pocket Spring Mattress with Lumbar Support, 2.5 cm Gel Memory Foam Quilted 350gsm Jacquard Knit Cover, 7 cm High-Density Foam Encased Edge, Non-Slip Base, Roll-Packed (Queen)
  • SK-2601 31 cm Medium Soft 5-Zone Pocket Spring Mattress with Lumbar Support, 2.5 cm Gel Memory Foam Quilted 350gsm Jacquard Knit Cover, 7 cm High-Density Foam Encased Edge, Non-Slip Base, Roll-Packed (Queen)
  • SK-2601 31 cm Medium Soft 5-Zone Pocket Spring Mattress with Lumbar Support, 2.5 cm Gel Memory Foam Quilted 350gsm Jacquard Knit Cover, 7 cm High-Density Foam Encased Edge, Non-Slip Base, Roll-Packed (Queen)
  • SK-2601 31 cm Medium Soft 5-Zone Pocket Spring Mattress with Lumbar Support, 2.5 cm Gel Memory Foam Quilted 350gsm Jacquard Knit Cover, 7 cm High-Density Foam Encased Edge, Non-Slip Base, Roll-Packed (Queen)
  • SK-2601 31 cm Medium Soft 5-Zone Pocket Spring Mattress with Lumbar Support, 2.5 cm Gel Memory Foam Quilted 350gsm Jacquard Knit Cover, 7 cm High-Density Foam Encased Edge, Non-Slip Base, Roll-Packed (Queen)
  • SK-2601 31 cm Medium Soft 5-Zone Pocket Spring Mattress with Lumbar Support, 2.5 cm Gel Memory Foam Quilted 350gsm Jacquard Knit Cover, 7 cm High-Density Foam Encased Edge, Non-Slip Base, Roll-Packed (Queen)
  • SK-2601 31 cm Medium Soft 5-Zone Pocket Spring Mattress with Lumbar Support, 2.5 cm Gel Memory Foam Quilted 350gsm Jacquard Knit Cover, 7 cm High-Density Foam Encased Edge, Non-Slip Base, Roll-Packed (Queen)
  • SK-2601 31 cm Medium Soft 5-Zone Pocket Spring Mattress with Lumbar Support, 2.5 cm Gel Memory Foam Quilted 350gsm Jacquard Knit Cover, 7 cm High-Density Foam Encased Edge, Non-Slip Base, Roll-Packed (Queen)
  • SK-2601 31 cm Medium Soft 5-Zone Pocket Spring Mattress with Lumbar Support, 2.5 cm Gel Memory Foam Quilted 350gsm Jacquard Knit Cover, 7 cm High-Density Foam Encased Edge, Non-Slip Base, Roll-Packed (Queen)
  • SK-2601 31 cm Medium Soft 5-Zone Pocket Spring Mattress with Lumbar Support, 2.5 cm Gel Memory Foam Quilted 350gsm Jacquard Knit Cover, 7 cm High-Density Foam Encased Edge, Non-Slip Base, Roll-Packed (Queen)
  • SK-2601 31 cm Medium Soft 5-Zone Pocket Spring Mattress with Lumbar Support, 2.5 cm Gel Memory Foam Quilted 350gsm Jacquard Knit Cover, 7 cm High-Density Foam Encased Edge, Non-Slip Base, Roll-Packed (Queen)

Description

Built for Rooms That Are Meant to Be Quiet

Some bedrooms are busy. This one isn't.

The SK-2601 was designed for spaces where the point is stillness — a low platform frame, warm paper-shade light, a view of a small garden, nothing on the floor that doesn't need to be there. That kind of room asks something specific of a mattress: it has to be quiet, it has to look calm, and it has to hold its shape without a lot of visual bulk doing the work.

What's underneath the calm is a serious build: 31 cm of layered comfort over a 5-zone lumbar support coil unit, with a 7 cm high-density foam encasement holding all four sides. The feel is genuinely medium-soft — around 4.5 to 5 out of 10​ — soft enough to meet you, supportive enough that your waist never drops.

Five Zones, Two Wire Gauges

This is the part that matters, and it's worth explaining properly.

Your body isn't evenly weighted. Your hips and waist carry the most mass, and that's exactly where an ordinary mattress gives out first: it hollows, your lower back loses its line, and you wake up stiff. So the coil unit here isn't uniform — it's built with two wire gauges working across five zones:

  • 2.2 mm coils (approx. 13.5 gauge) through the lumbar / waist zone​ — thicker wire resists compression, holding the heaviest part of you level instead of letting it sink into a hollow.
  • 1.9 mm coils (approx. 14.5 gauge) at the head, shoulders and legs​ — slightly softer, letting the shoulders settle just enough for comfortable side sleeping and easing pressure along the calves and feet. 
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Every coil is wrapped in its own fabric pocket and moves independently, so the zones act separately rather than pulling on each other. That brings the usual pocket-spring advantages too: movement doesn't travel across the bed, weight is distributed where it actually falls, and air circulates through the core instead of being trapped in solid foam.

7 cm of High-Density Foam Around the Edge

The perimeter is the first place a mattress fails. On most beds, sitting on the side feels like sitting on a slope — and on a low platform frame, where you sit down from a lower height and put more weight on the edge, that failure shows up faster.

This mattress uses a 7 cm-wide #35 high-density foam encasement​ around all four sides — a solid foam rail, not just a few heavier springs. It's a firmer, quieter solution, and it does three things you'll notice:

  1. Sitting on the edge feels solid​ — putting on shoes, reading, or just perching on the side doesn't collapse it.
  2. The full width is usable​ — you can sleep near the perimeter without feeling like you'll roll off, which effectively makes a Queen feel bigger.
  3. The bed keeps its shape​ — the encasement resists the outward bulge that develops over years of use.

31 cm of Comfort, Layer by Layer

The height isn't just a number — it's what makes the comfort layers last. Here's what sits above the springs:

Quilted comfort panel:

  • 2.5 cm of #20 comfort foam​ — the first thing you feel. Light, airy cushioning that softens the surface immediately.
  • 2.5 cm of #32 gel-infused memory foam​ — the pressure-relief layer. Gel helps carry heat away from the surface while the memory foam contours to your shoulder, waist and hip.
  • 2500# polyester fibre wadding​ — a generous loft layer quilted together with the foams above. It adds plushness and, just as importantly, locks the fill in place so the surface doesn't bunch or drift toward the middle.

Support layer:

  • 4.5 cm of #30 high-resilience foam​ — the hand-off layer. It takes the load from the comfort system and spreads it evenly across the coil unit, so you get deep cushioning without ever feeling like you're sinking through to the springs.

These are quilted into a single panel​ rather than stacked loosely, which is why the surface stays flat and even over time — and why the quilting pattern on the cover holds its shape instead of flattening out.

The Cover: Jacquard Knit on Top, Non-Slip Beneath

  • Top panel — 350 gsm jacquard knitted fabric.​ Knit has natural stretch, so it moves with the comfort layers instead of fighting them. The quilting stays crisp, and the surface feels soft rather than papery. At 350 gsm it's a substantial weight that stands up to years of sheet changes.
  • Base — non-slip fabric.​ The underside grips your platform, slatted frame or box spring, so the mattress stays exactly where you put it instead of gradually drifting off-centre — which matters more than usual on a low, open platform frame with no footboard to stop it.

Works on a Low Platform, Not Just a Standard Frame

A 31 cm mattress on a low platform bed is a deliberate look: the bed sits close to the floor while the mattress itself carries real presence. It works, provided two things are true — and both are:

  • The base is ventilated.​ Slatted platforms or frames with gaps let air move under the mattress. A completely solid platform is fine too, but ventilate the room well in the first week.
  • The mattress stays put.​ Hence the non-slip base — on a low frame without a footboard, this is what keeps it from creeping.

Total bed height comes to roughly 55–60 cm​ on a typical 25–30 cm platform, which is still an easy, natural height to get in and out of.

Single-Sided: No Flipping, Ever

This is a single-sided (no-turn) mattress. The comfort system is built into the top only; the base is a non-slip structural layer. There's no flipping schedule and no "which side is up" question at 2 a.m.

What we do recommend is rotating it 180° (head to foot) every 3–6 months​ for the first couple of years. Two minutes, and it evens out wear better than anything else you can do.

Delivery, Expansion and the First Few Nights

Your mattress is compressed and roll-packed in a single reinforced export carton​ — far easier through doorways, up stairs and around tight corners than a fully built bed.

  1. Carry the carton to the room (two people is easier; one person can manage most sizes).
  2. Unbox, lay the rolled mattress on the frame, and cut the outer wrap carefully.
  3. Let it expand. It's sleepable within a few hours and reaches full height in 24–72 hours.

Two honest notes: a faint new-mattress smell for the first day or two is normal — ventilate the room and it clears. And because the comfort layers are thicker than a standard bed, give yourself two to three weeks to adjust; medium-soft mattresses feel slightly different as the foams settle.

Specifications

  • Type:​ Pocket spring mattress (single-sided, no-turn)
  • Profile:​ 31 cm / approx. 12 inches
  • Firmness:​ Medium Soft, 4.5–5 / 10
  • Support core:​ 5-zone individually pocketed coils, 1.9 mm + 2.2 mm wire (lumbar zone in firmer 2.2 mm)
  • Edge:​ 7 cm #35 high-density foam encased perimeter
  • Quilted comfort panel:​ 2.5 cm #20 comfort foam + 2.5 cm #32 gel-infused memory foam + 2500# polyester fibre wadding
  • Support layer:​ 4.5 cm #30 high-resilience foam
  • Cover (top):​ 350 gsm jacquard knitted fabric
  • Cover (base):​ non-slip fabric
  • Packaging:​ compressed, roll-packed in a reinforced export carton
  • Available sizes:​ Twin, Twin XL, Full, Queen, King, Cal King
  • Care:​ no flipping; rotate head-to-foot every 3–6 months; spot clean only; mattress protector recommended
  • Compatible bases:​ platform bed, low platform frame, slatted frame (slats no more than 2" apart), box spring, adjustable base 
  • Certifications:​  CertiPUR-US®、OEKO-TEX®、16 CFR 1633 

FAQ

What does "5-zone lumbar support" actually do?​ It puts firmer coils under your waist — the heaviest part of your body — and softer coils under your head, shoulders and legs. The result is a more level spine instead of a sagging middle.

How soft is medium soft?​ Around 4.5–5 out of 10. Clearly cushioned on first touch, but it doesn't swallow you. Best for side sleepers and lighter body weights; back and stomach sleepers over roughly 230 lb (105 kg) usually prefer firmer.

Will it work on a low platform or floor-style frame?​ Yes. Use a ventilated base (slats or a slatted platform), and the non-slip underside will keep it from shifting.

Do I need to flip it?​ No — it's single-sided. Just rotate it head-to-foot every few months.

Is 31 cm too thick for my sheets?​ It's about 12 inches, so deep-pocket or "extra deep" fitted sheets are recommended. Standard sheets may not tuck fully under the corners.

Will I feel my partner moving?​ Less than on a traditional open-coil spring bed. Individually pocketed springs absorb most movement before it crosses the mattress.

How long until it's ready?​ Sleepable within hours; full height in 24–72 hours.

Choose your size and add to cart — a quieter, softer bed with support exactly where your weight sits.

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