What is GSM for Doonas and Underlays?

When shopping for quality bedding like doonas, underlays, or quilts, you may have come across the term GSM and wondered what it actually means. Grams per Square Metre (GSM) essentially influences things like how warm or heavy a quilt is, so knowing a bit about it means you know how to find the perfect bedding.

In this article, we’ll break down what GSM means in quilts and blankets, why it matters, and how it affects the feel of your bedding.

What Does GSM Mean in Quilts?

GSM stands for Grams per Square Metre. It’s a measurement of weight that tells you how much wool or filling has been used in every square metre of the quilt or underlay. You’ll see it used often in bedding to help describe the overall feel:

• A higher GSM means more filling and typically more warmth.
• A lower GSM means less filling, often resulting in a lighter, cooler feel.
  
  

So if you’re wondering “what is GSM quilt?” or “GSM meaning quilt”, just think of it as a way to compare how much material is used and how warm the quilt is likely to be.

The GSM Meaning for Quilts

Here’s a quick breakdown of typical GSM ranges and what they’re best for:

• 100 to 250 GSM: Light and breathable. Great for summer or warm nights.
• 250 to 400 GSM: Balanced and versatile. Ideal for spring and autumn.
• 400+ GSM: Heavier and warmer. Designed for winter or cooler climates.
  
  

If you’re comparing multiple options and thinking, “what is GSM in blankets or quilts?”, these numbers can help you figure out which one suits your needs best.

How GSM Works in Underlays Too

GSM isn’t just for quilts; it applies to underlays as well. In this case, GSM gives you an idea of how thick and cushioned the underlay will feel beneath your body.

A higher GSM underlay adds extra softness and insulation, while a lower GSM option offers a lighter, more streamlined feel. It all depends on how much support and comfort you’re after.

Wool vs Cotton GSM

It’s important to remember that different materials feel different, even at the same GSM. For instance, a 300 GSM in quilts made from wool will feel warmer than a 300 GSM cotton quilt because wool is naturally more insulating.

Looking for something lighter? Check out our summer cotton quilt, perfect for warm weather without compromising on comfort.

How to Choose the Right GSM

Not sure which GSM is right for you? A few simple factors can help guide your decision:

• Your local climate: If you live in a colder climate, choose a higher GSM to stay warm through the night. In warmer areas, lighter quilts with lower GSMs are usually the way to go.
• How you sleep: Run hot at night? A lower GSM can help keep things cool and breathable.
• The seasons: Lots of people switch it up, using a light GSM quilt in summer and a heavier one for winter.

Still not sure? Take a look at our blog on the characteristics of summer quilts for more tips on warm-weather bedding.

Feel the Difference with Woolstar

At Woolstar, we take the guesswork out of choosing the right bedding. Our wool products are made with care, using 100% Australian wool that you can trace all the way back to the farm.

Whether you’re after a lightweight option or something warm and snuggly, we’ve got a range of wool quilts to suit every need, all backed by our Woolstar Guarantee for quality and comfort.

Ready to sleep better? Browse our collection today and find your perfect match.