Buying a mattress topper can bring questions on the terms manufacturers and sellers use. For example, GSM is the term mattress topper buyers should be aware of to understand comfort, durability, and quality.
This guide breaks down the basics of GSM in a mattress topper to find the best topper UK buyers purchase to enhance sleep.
What Does GSM Mean in a Mattress Topper?
GSM means Grams per Square Metre. This metric applies to the measurement of fabric weight or density. GSM levels in a mattress topper will also refer to the grams or weight of material per square metre on products like a padded mattress topper, mattress pad UK, and a quilted bed topper.
In simple words:
High GSM mattress topper = thicker/heavier/plusher
Low GSM mattress topper = lighter/thinner/breathable
GSM measurement isn’t usually specific to a foam mattress topper’s thickness, like 3 memory foam mattress topper for example, but is crucial for a fabric-filled, fibre, or comforter-style mattress topper.
Why GSM Matters in a Mattress Topper
The GSM level of a mattress topper can have a significant effect on sleep comfort levels. The following reasons show how it impacts various areas:
1. Comfort & Softness
High GSM density toppers can give extra cushioning and softness on a mattress. A higher GSM padded mattress topper can also serve as a mattress softener for firmer or ageing mattress beds.
2. Durability & Quality
Higher GSM tends to indicate a higher quality mattress topper with a better filling. It can make the topper last longer. Lower GSM toppers may flatten out sooner.
3. Warmth & Temperature
High GSM toppers will be warmer (good for the cold UK climate)
Low GSM toppers are cooler and more breathable
This will be important when comparing a cooling mattress topper UK option or a warmer type of padded mattress topper.
GSM Explained: Common Ranges
These are the approximate ranges of GSM in mattress toppers:
Below 200 GSM
- Light padding
- Often used for a mattress protector instead of an actual bed topper
200 – 400 GSM
- Medium plushness
- Ok for guest beds or temporary purposes
- Cheap mattress topper range
400 – 700 GSM
- Higher comfort and support
- Good for everyday use
- A standard range and the best value mattress topper UK
700+ GSM
- Very plush and cushioned
- Often for luxury toppers and hotel-style bedding
- GSM vs Memory Foam Mattress Toppers
Memory foam mattress toppers UK buyers will see should not worry as much about GSM since foam products are measured differently:
Foam density in kg/m³
The thickness, e.g., 3 memory foam mattress topper
The firmness level, soft, firm, or extra firm mattress topper
Yet, some memory foam mattress toppers for mattress beds feature a fabric cover that could still have a GSM rating for added comfort and durability.
The Best GSM Level for a Mattress Topper
Ideally, the mattress topper GSM UK buyers are interested in will depend on their preferences and requirements.
For extra softness →
A high GSM padded mattress topper would be best
For budget-conscious buyers →
Cheap mattress toppers with a medium GSM would work well
For firm support →
A firm mattress topper or foam-based mattress topper instead
For all-season use →
Go for a medium GSM with breathable materials
GSM for Mattress Topper Sales in the UK
Whether buyers are looking at mattress topper sale UK options or mattress toppers on sale, be sure to look at GSM mentioned in the product description. Some mattress toppers can be thick with a cover that has a low GSM, affecting its performance and longevity.
Stores like mattress company and the sleep company will often include GSM info in their mattress topper listings to help buyers compare and find the best mattress toppers UK has to offer.
Final Words
GSM is an important specification to look for when buying a mattress topper UK shoppers can trust for good sleep comfort and durability – particularly with padded and fabric-filled topper options.
Foam density in kg/m³ is different from GSM and is more applicable to a memory foam mattress topper. GSM plays a large part in factors like softness, warmth, and comfort level.
If buying mattress toppers UK requires a place to check, ensure the GSM information is included along with size, materials, and firmness level for mattress toppers for better buying decisions.