# What a Mattress Listing Won't Tell You: Specs to Check Before You Buy **By Joy David** · 2026-06-08 ![Singapore HDB bedroom with a quilted mattress on a wooden bed frame while a couple prepares the bed.](https://cdn.shopify.com/s/files/1/1805/8667/files/megafurniture-mattress-buying-guide-hdb-bedroom.jpg?v=1780890011) Singapore mattress listings are full of numbers. "1,000 coil count." "High-density foam." "Five-zone support." The problem is that none of those phrases mean anything without a second number alongside them. Coil count without coil type is a marketing phrase. "High-density" without a kilogram-per-cubic-metre figure is a feeling, not a fact. If you have been comparing listings and something feels slippery, you are right to notice it. This article names the four specs that actually predict sleep quality and durability, explains what number to look for in each case, and tells you what to do when the listing does not show them. > Before buying any mattress in Singapore, ask for foam density, coil type and gauge, comfort-layer depth in centimetres, and edge-support construction. Look for 30 kg/m³ or above for the support core, pocketed coils for motion isolation, clear layer breakdowns, and proper edge reinforcement. Size it to your bed frame and account for humidity when choosing materials. ## Why Listings Hide the Numbers That Matter Retailers are not being deliberately deceptive when they list "premium high-density foam." The industry has simply never standardised what those words mean for consumers. A manufacturer can call foam high-density at 22 kg/m³ or at 40 kg/m³, both descriptions are defensible, and neither is technically wrong. The same logic applies to coil counts: the figure sounds impressive until you know whether the coils are individually wrapped or all connected. Spec-aware buyers treat a listing without raw numbers the same way they treat a laptop listing without the RAM figure: a signal to dig deeper before paying. ## Foam Density: The Number Most Listings Drop Foam density, measured in kilograms per cubic metre, tells you how much material is actually packed into each cubic centimetre of the foam. It is the single most reliable predictor of how quickly a foam layer will compress and sag. For the support core of a mattress, look for density around 30 kg/m³ as a working floor. Below that, the foam compresses faster and loses its ability to hold your spine in alignment. You will feel the mattress "bottom out" within a year or two of regular use. Higher-density foams, 35 kg/m³ and above, last significantly longer and maintain their profile under heavier sleepers or two-person use. Memory foam comfort layers are often denser than polyfoam cores by design, because denser memory foam conforms more precisely and recovers more slowly. This can be a feature or a flaw depending on whether you run warm at night. A listing that says "memory foam comfort layer" without a density figure is worth a direct question to the retailer. If a brand will not supply the density figure, that is itself information. [Memory foam mattresses](/collections/memory-foam-mattress) from reputable suppliers should come with technical specs available on request. ## Coil Count and Coil Type: One Number Misleads Without the Other A 1,500-coil mattress sounds superior to an 800-coil mattress. It often is not, and here is why: coil count only makes sense once you know the coil architecture. Bonnell springs are the older, interconnected design. The coils share a wire frame, which means when one compresses, the whole grid moves. A 1,500-coil bonnell mattress will transfer more motion from one side of the bed to the other than an 800-coil pocketed-spring design, because pocketed coils are individually wrapped in fabric and move independently. For couples especially, that motion isolation difference is far more meaningful than the headline number. Coil gauge, or the wire thickness, adds another layer. Thicker wire with a lower gauge number creates firmer resistance, while thinner wire feels softer. A zoned pocketed-spring design uses different gauges in different areas, with firmer support under the lumbar area and softer support under the shoulder. This is what "five-zone support" usually refers to. It is a genuine feature worth paying for, but only if the base construction is pocketed, not bonnell. The spec to ask for: coil type, coil count per queen or king size, and whether zoning is genuine gauge variation or just a marketing label. [Pocketed spring mattresses](/collections/pocketed-spring-mattress) are worth comparing directly if motion transfer is a concern. ## Comfort Layer Depth: Where "Feel" Lives The comfort layer is everything above the support core: memory foam, latex, gel foam, pillow top, or a combination. Its depth determines how much cushioning you feel in the first few seconds of contact, and how quickly the mattress lets you settle through to the support below. Listings sometimes show total mattress height, say 28 cm, without breaking out how much of that is comfort layer versus support core. A 28 cm mattress with 6 cm of comfort foam and 22 cm of dense pocketed coils is a very different product from a 28 cm mattress where 14 cm is soft polyfoam layered over a shallow coil unit. The first will support; the second will compress. Ask for the layer-by-layer breakdown, not just the total height. If the retailer can give it to you in centimetres with density or material spec per layer, trust them more. If they can only gesture at the total, that is a reason to visit a showroom and press the mattress yourself, ideally for at least ten minutes in your actual sleeping position, not a thirty-second sit. ## Edge Support: The Spec Nobody Mentions Until They Need It Edge support is how well the perimeter of the mattress holds up under load. It matters in two situations that most buyers do not think about at purchase: sitting on the side of the bed to dress in the morning, and the feeling of usable sleep surface when two people are in a queen, 152 x 190 cm, or king, 182 x 190 cm. Without reinforced edges, a sprung or foam mattress will compress sharply near the perimeter, which effectively shrinks the usable sleeping area. You end up sleeping toward the centre to avoid rolling toward the drop. On a queen, that compression can reduce the practical width noticeably, which defeats part of the purpose of choosing a larger size. Good edge support typically comes from a higher-density foam border encasing the spring unit, or from a firmer perimeter coil row. Neither will be visible in a product photo. Ask: "Is there dedicated edge reinforcement?" If the answer is yes, ask what form it takes. If the answer is a blank look, treat it as "probably not." ![Modern Singapore bedroom featuring a quilted mattress with neutral bedding and practical home storage.](https://cdn.shopify.com/s/files/1/1805/8667/files/megafurniture-mattress-listing-specs-bedroom.jpg?v=1780890011) ## Size, Bed Frame, and the Singapore Climate Layer Two practical specs that listings handle inconsistently are worth standardising in your checklist. First, Singapore mattress dimensions follow standard sizes: single 91 x 190 cm, super single 107 x 190 cm, queen 152 x 190 cm, and king 182 x 190 cm, with length sometimes listed at 190 to 198 cm depending on the brand. Your bed frame dimensions should match the mattress size exactly. A frame typically adds roughly 10 to 15 cm around the mattress perimeter, which matters when you are planning bedroom walkway clearance of around 60 cm on each side. Second, Singapore's humidity, typically 70 to 85% and often higher after rain, means that mattress breathability is a genuine spec, not a luxury add-on. Dense memory foam is the worst performer here: it traps heat and moisture, which creates a surface that runs noticeably warmer than a latex or hybrid alternative. If you sleep warm already, or if your bedroom faces west and catches the afternoon sun, the heat-retention spec of the comfort layer matters as much as its density or depth. Gel-infused foams and open-cell latex do better; solid closed-cell memory foam does not. For buyers who want a cooler surface without giving up the contouring feel, [cooling mattresses](/collections/cooling-mattresses) formulated for tropical climates are worth looking at as a category, not just a feature. ## Spec Comparison Table: What to Ask Before You Buy Spec What to ask Minimum to accept Red flag Foam density Density in kg/m³ per layer ~30 kg/m³ support core "High-density" with no number Coil type Pocketed or bonnell? Pocketed for couples High coil count, type not stated Comfort layer depth Layer-by-layer breakdown in cm Stated per layer, not just total height Only total mattress height given Edge support Type of perimeter reinforcement Named edge support construction No mention of edges at all Breathability Open-cell, gel, latex, or solid foam? Relevant in SG climate Closed-cell memory foam, no qualification Size Exact cm including length Matches your frame Size listed in name only, no dimensions ## Frequently Asked Questions ### Is a Higher Coil Count Always Better in a Singapore Mattress? Not automatically. Coil count only tells part of the story. A higher count of individually pocketed coils does give better motion isolation and more precise support, which is meaningful. But a high count of bonnell, or interconnected, springs can transfer more motion than a lower count of pocketed ones. Always confirm the coil type alongside the count before treating the number as a quality signal. ### What Foam Density Should I Look for in a Mattress for Two People? For a shared queen or king, aim for a support-core foam density of around 30 kg/m³ or above. Two people create uneven, repeated load across the surface, and lower-density foam will compress unevenly and sag faster. Higher density costs more upfront but maintains its profile significantly longer under shared use. ### Does Singapore's Humidity Really Affect Which Mattress I Should Buy? Yes, and it is worth treating as a primary spec rather than a footnote. At 70 to 85% relative humidity year-round, closed-cell memory foam retains heat and moisture in ways that latex and gel-infused foam handle better. If you already sleep warm or your room gets afternoon sun, breathability should sit alongside support as a buying criterion, not below it. ### How Do I Check Specs When the Listing Does Not Show Them? Ask directly: email or call the retailer with specific questions about foam density per layer, coil type, and edge support construction. A supplier who knows their product answers these quickly. If the response is vague or deflects to marketing language, treat that as a signal about the product. Visiting a showroom lets you press-test and ask in person, which often produces more candid answers. ### Do Mattress Sizes in Singapore Differ From International Sizes? The standard names are similar, but dimensions can vary by a few centimetres between markets. In Singapore, a queen is typically 152 x 190 cm and a king 182 x 190 cm, with some brands listing length at up to 198 cm. Always confirm the exact centimetre dimensions match your bed frame before ordering. The name alone is not enough to guarantee fit. ![Quilted mattress in a cosy Singapore bedroom with soft lighting, natural wood furniture, and practical decor.](https://cdn.shopify.com/s/files/1/1805/8667/files/coordinated-living-dining-furniture-package-hdb.jpg?v=1780890011) ## Read the Spec Sheet, Not Just the Name The mattress market in Singapore has more options than ever, which makes the skill of reading a spec listing and knowing which gaps to fill more valuable than brand loyalty or price alone. Foam density, coil architecture, comfort-layer depth, and edge reinforcement are the four numbers that separate a mattress that holds up for a decade from one that sags by year two. Ask for them. If a retailer cannot or will not supply them, that is a meaningful data point in itself. [Browse the full mattress range](/collections/mattress) at Megafurniture, where specifications are available to compare and the team can walk you through the layer breakdown in person at the Joo Seng or Tampines showrooms. Complimentary delivery and professional assembly come included on qualifying orders. If you already know the construction type you want, the [Somnuz mattress range](/collections/somnuz-mattress) is the in-house label worth comparing directly against the broader selection. Somnuz is Megafurniture's own mattress brand, and an expanding part of the range is built and inspected in the company's own factories in Batu Pahat and Foshan rather than bought in finished, which is one reason the pricing stays sensible without cutting corners on the specs that actually matter. Technical questions about construction get a more direct answer when the team has access to the production process, not just the product sheet. --- > Source: [Megafurniture](https://megafurniture.sg/blogs/articles/what-a-mattress-listing-wont-tell-you-specs-to-check-before-you-buy)