# Our Foam PawLunova — Our Foam (page source) PawLunova · Our Foam ## One number decides whether a dog bed survives. Almost nobody prints it. It is foam density, it is measured in kilograms per cubic metre, and once you know it you can never buy a dog bed the old way again. The short version - Dog beds are sold on the **cover**. Covers decide week one. **Foam density** decides year three. - Every PawLunova memory foam bed is built on a **50kg/m³ high-density core**, CertiPUR-US certified. - Under that: a **waterproof liner**. Over it: a cover that **zips off and washes at 30°C**. - We back the core with a **5-year no-flatten guarantee**, because we know what it is made of. ## Why your last dog bed died Here is the uncomfortable mechanic of this whole category. A dog bed is judged by hand, in a shop or in a photograph, in the first ten seconds. Everything you can assess in ten seconds — how it looks, how plush it feels, whether the stitching is neat — is the **cover**. And the cover is the cheap part. So that is where the money goes. Beautiful herringbone, thick bouclé, a satisfying zip. Underneath, in the part nobody photographs and no listing describes, sits a block of low-density foam or a bag of shredded offcuts. Your dog lies on it for twelve hours a day. Thirty kilos of Labrador, in the same spot, every night. Low-density foam does not fail dramatically. It fails quietly and on a schedule. The cells collapse, the block loses recovery, and one morning you notice your dog is essentially lying on the floor with a duvet cover over it. The bed still _looks_ fine. That is the trap. A dog bed is not a soft furnishing. It is a load-bearing structure that happens to be soft, holding up a specific weight for four thousand hours a year. ## What foam density actually means Density is how much foam material is packed into a given volume, written as kilograms per cubic metre (kg/m³). It is **not** the same as firmness — you can have soft high-density foam and hard low-density foam. Density measures how much there _is_ of it, and therefore how long it can keep doing its job before the structure gives out. Roughly, this is the landscape you are buying in: Foam density Typically found in What happens under a dog **Shredded** no density rating Bean-bag style beds, cushion beds, "fibre filled" Migrates away from the pressure points within weeks. Support is gone before the fabric shows any wear at all. **Under 25kg/m³** low density Supermarket and marketplace beds, most sub-£40 "orthopaedic" listings Noticeable flattening in the first few months under a medium or large dog. This is the eleven-week bed. **25–35kg/m³** standard upholstery Mid-market pet beds, general furniture cushioning Fine for a light dog. Under 25kg+ of daily load, expect meaningful sag inside a year or two. **35–45kg/m³** high density Better human mattress toppers, premium pet beds Holds shape well. The point at which "orthopaedic" starts to mean something structural rather than decorative. **50kg/m³** PawLunova core Our memory foam beds Built to keep its recovery under a large dog for years, not months. This is the specification our 5-year guarantee is written against. Density bands above describe the general foam market, not any specific competitor's product. We publish ours; most brands publish nothing, which is rather the point of this page. ## Memory foam, and the three things it is not Memory foam is viscoelastic — it responds to heat and weight, moulds to the shape pressing into it, then recovers when the pressure lifts. For a dog with stiff hips or a bony elbow, that matters: the bed spreads the load instead of concentrating it on the two or three points that already hurt. Three things sold as memory foam that are not doing that job: - **Shredded memory foam.** Real memory foam, chopped up. Chopping it destroys the one property you were paying for — the continuous surface that distributes weight. It becomes a bean bag that migrates out from under your dog. - **An egg-crate top layer.** A 2cm convoluted sheet glued over ordinary foam. It adds a texture, not support. Underneath is whatever the manufacturer could buy cheapest. - **"Memory foam infused".** A marketing phrase with no technical meaning. Ask for the density; you will rarely get a number back. ## What CertiPUR-US certification covers Your dog sleeps on this thing with their nose pressed into it for a third of their life. CertiPUR-US is an independent foam certification programme, and it tests the foam for what is _not_ in it: - Made without ozone depleters - Made without PBDE, TDCPP or TCEP flame retardants - Made without mercury, lead and other heavy metals - Made without formaldehyde, and without regulated phthalates - Tested for low VOC emissions for indoor air quality It is a chemical-content and emissions standard, not a comfort rating — it tells you the foam is clean, not that it is good. Density tells you it is good. We want both on every bed we sell. ## The three layers, and why the order matters 1. ### The core — 50kg/m³ high-density foam The part doing the work. Everything above it is there to protect it, because the day the core fails, the bed is finished no matter how good the fabric still looks. 2. ### The waterproof liner Sealed around the foam. Wet coats, muddy paws, an accident from an older dog, a spilt water bowl — none of it reaches the core. This is the layer that makes a washable bed genuinely washable rather than technically washable. 3. ### The zip-off cover — washes at 30°C The part that gets dirty is the part that comes off. So you can wash it as often as it needs washing without ever wearing the bed out, because you are never washing the bit that matters. [Full care instructions are here.](/pages/care) ## The maths that makes the good bed the cheap one This is the part worth doing on the back of an envelope before you buy anything, from us or anyone else. A ### The £55 bed, replaced yearly Three beds over three years is **£165**, for 1,095 nights of sleep that got progressively worse. **About 15p a night** — and rising, because the last two months of every bed are barely a bed. B ### The £129 bed, guaranteed 5 years One bed, 1,825 nights, still recovering its shape on the last one. **About 7p a night** — less than half, for a bed that was better on every single one of those nights. The expensive dog bed is the one you buy over and over. That is not a slogan; it is just what the numbers do when foam density is left out of the decision. ## Foam questions people actually ask What foam density is best for a dog bed? For a small or light dog, 25–35kg/m³ will hold up reasonably. For anything medium-sized and upwards, and for any dog with joint problems, look for 35kg/m³ as a minimum and treat 50kg/m³ as the standard worth paying for. Density is the number that predicts how long the support lasts. Is memory foam or orthopaedic foam better for dogs? They are not opposites. "Orthopaedic" describes what a bed is meant to do — support joints and spread pressure — and memory foam is one of the materials used to do it. A single-piece, high-density memory foam core is the construction that most reliably delivers on the word. [Our orthopaedic buying guide covers this in full.](/pages/blogs-guides-orthopaedic-dog-bed-buying-guide) How thick should the foam be? Thickness and density work together. A thin layer of very dense foam will bottom out under a heavy dog; a thick layer of cheap foam will simply collapse more slowly. As a rule of thumb, a large dog wants meaningful depth under the hips as well as high density. Exact depths are listed on each product page. Can I wash the foam itself? No — and you should not need to, which is the entire reason for the waterproof liner. Soaking a foam core damages its cell structure and it will not dry properly inside. Wash the cover at 30°C, wipe the liner, and the core never gets wet. [Full instructions here.](/pages/care) Will a high-density bed feel hard to my dog? No. Density is about how much foam is in the block, not how firm it feels. A high-density memory foam core feels like it gives way and cradles — it just keeps doing that in year four, which a low-density block cannot. If firmness is your concern, [the size and firmness guide](/pages/size-guide) explains how to match it to your dog. What does the 5-year no-flatten guarantee actually cover? The foam core losing its structural shape under normal domestic use, by the dog the bed was sized for, within five years. If that happens, we replace the bed. It excludes chewing, cover fabric wear, misuse and normal cosmetic ageing — our beds are not chew-proof and we would rather say so here than in the small print. ### Now you know the number. Go and use it. On our beds or anyone else's — ask for the foam density before you ask about the colour. Every PawLunova memory foam bed is 50kg/m³, CertiPUR-US certified, and comes with 100 nights to change your mind. [Shop the orthopaedic range](/collections/orthopaedic-dog-beds-uk) [Get the size right first](/pages/size-guide) Next: [How to choose an orthopaedic dog bed](/pages/blogs-guides-orthopaedic-dog-bed-buying-guide) · [Why dog beds go flat](/pages/the-fourth-bed) · [How to wash a dog bed](/pages/care) --- > Source: [Pawlunova](https://pawlunova.co.uk/pages/our-foam)