Mattress Spec Sheet Decoded — What to Look For

Mattress brands publish spec sheets that look detailed and reveal almost nothing. Twelve lines, all marketing-friendly numbers, none of them the ones that actually decide whether the mattress lasts. Here is how to read a spec sheet the way a manufacturer reads it.

What an honest spec sheet contains

A complete mattress spec sheet has nine lines. If a brand publishes fewer than five, treat it as incomplete:

1. Total thickness — in inches.
2. Layer-by-layer construction — material, density (kg/m³) and thickness for each layer, from top to bottom.
3. Firmness rating — IFD or ILD with the test load (typically 25% deflection).
4. Cover material — fabric type, GSM if applicable, washable yes/no.
5. Available sizes and standard size tolerances — in inches and mm.
6. Warranty period and what it covers — including sag tolerance threshold (e.g. covers sag below 1.5 inches).
7. Country and city of manufacture.
8. Care instructions — rotation schedule, washing, protector recommendation.
9. Certifications — ISO, BIS, fire-retardancy standards if applicable.

If you cannot get these nine answers from a brand before purchase, you are buying on trust alone.

The hidden numbers — what brands deliberately omit

Three numbers get hidden because they expose the cost-cutting:

Support core density. Brands quote "HR foam construction" without telling you whether the HR layer is 32 kg/m³ (good) or 22 kg/m³ (a corner cut). A 6-inch mattress with 1 inch of memory foam top and 5 inches of 22 kg/m³ PU underneath is being sold at memory-foam prices on PU economics.

Comfort layer thickness. Memory foam mattresses often have only ½ inch of actual memory foam on top of a much cheaper support core. The brand will advertise "memory foam mattress" without specifying the layer-by-layer breakdown. Always ask for the construction.

Warranty sag threshold. Most warranty cards cover sag — but only beyond a certain depth. A warranty card that says "covers sag of 2 inches or more" is much weaker than one that covers 1.5 inches; the difference is two years of usable life.

The words that mean nothing

These are the high-frequency marketing words on Indian mattress packaging that have no fixed technical meaning. Translate them when you see them:

"Orthopaedic" / "ortho-firm" / "back support": A firm mattress. No certification, no medical endorsement required. What you actually need to know is the density of the support core.

"Premium" / "luxury" / "pinnacle": Marketing tier label. Reveals nothing about the spec.

"Cooling gel" / "ice fabric" / "thermo-cool": Surface-cover treatment. Effect fades within months. Real cooling comes from open-cell foam structure, not cover finishes.

"NASA technology" / "aerospace foam" / "memory foam by NASA": Memory foam was developed in the 1960s for NASA seat-cushioning research. It has been commodity since the 1980s. Every brand sells memory foam. The brand-name attribution is marketing.

"100-night trial" / "sleep test": Useful but limited. Returns are sold back at a discount; most brands recoup the loss via higher list prices. Trial periods are not a substitute for getting the spec right upfront.

What honest brands publish without being asked

A brand that is selling on quality rather than marketing will tell you the density of every foam layer, the firmness rating with the test methodology, the exact warranty terms, the factory location, and the standard certifications — without you having to ask. These numbers are not trade secrets. The brands that hide them are usually hiding cost-cutting; the brands that publish them are usually competing on engineering.

Our product pages publish density, firmness, thickness options, sizes and warranty for every Sparsh SKU. Our buying guide walks through the same line-by-line logic with concrete examples from our range.

FAQ

What does "HR foam construction" actually tell me about a mattress?

Very little on its own. HR (high-resilience) foam exists across a wide density range from 22 kg/m³ to 40 kg/m³. The brand telling you "HR foam construction" without quoting the density is hiding the durability conversation. Always ask for kg/m³.

Is a 10-year warranty better than a 7-year warranty?

Not necessarily. What matters is what the warranty covers — sag tolerance threshold, manufacturing defects, normal wear exclusions. A 7-year warranty that covers sag below 1.5 inches is stronger than a 10-year warranty that excludes any sag below 2 inches.

Should I trust "100-night trial" offers?

They are useful but limited. Brands offering trials recover the cost of returns in their list prices. A trial is not a substitute for buying the right spec upfront — and most mattresses feel similar in the first 100 nights regardless of long-term durability.

What is the most common mattress spec lie?

Quoting a single foam type ("memory foam mattress") without breaking down the layer-by-layer construction. Most "memory foam mattresses" have ½ to 1 inch of memory foam on top of a much cheaper PU or bonded core. Always ask for the layer breakdown.

How can I verify mattress specs before buying?

Ask for the warranty card or product manual before paying. Honest brands share it freely. Walk away if a dealer cannot produce it. The warranty card lists actual construction and what is covered; marketing brochures do not.

Want spec-transparent shopping?

Sparsh publishes layer-by-layer construction, density and IFD on every product page. Contact us and we’ll connect you to your nearest authorised dealer with the warranty card in hand.

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Spec Sheet Decoded — What Mass-Market Mattress Brands Hide