Why are knitted blankets so warm?


It's no secret that knitted blankets are a must-have for cold winter nights. But what makes them so warm and cozy? In this article, we'll explore the reasons why knitted blankets are so effective at keeping us warm, and why they're an excellent choice for anyone looking to stay toasty during the colder months.

The Science Behind Knitted Blankets

To understand why knitted blankets are so warm, we first need to take a closer look at the science behind them. The process of knitting creates a tightly woven fabric that is thick and insulating. Unlike woven fabrics, where the yarns are interlaced over and under each other, the yarn in a knitted fabric is looped together, creating a three-dimensional structure that traps air and heat.

This trapped air acts as a barrier between the skin and the cold air, preventing heat loss and creating a warm layer around the body. The thicker the knit, the more air that is trapped, and the warmer the blanket becomes. This is why knitted blankets with a chunky, oversized feel are particularly cozy.

Why Natural Fibres Matter

Another reason why knitted blankets are so warm is the materials they're made from. Natural fibers, such as wool, alpaca, and cashmere, are excellent insulators. These fibers have the ability to regulate temperature by wicking away moisture, which keeps the body dry and warm.

Wool, in particular, is an excellent choice for keeping warm. This natural fiber has a crimped structure that creates pockets of air, trapping heat and making it an ideal choice for winter clothing and blankets. Alpaca and cashmere, while more expensive, have similar insulating properties, making them good options for anyone seeking a luxurious and cozy feel.

The Thick and Thin of Knitting

The thickness and style of a knitted blanket can also impact its warmth. Thick, chunky knits will provide more insulation, while thinner blankets may be better suited for mild winter weather. However, tight knitting patterns such as cables or basket weave can also create a lot of warmth by trapping air within the knit.

On the other hand, loose knitting patterns, such as those found in lacy shawls and blankets, are less insulating and better suited for spring or fall weather. These sorts of knits allow air to pass through the fabric, making them less effective at trapping heat.

Layering for Added Warmth

Another way to maximize the warmth of a knitted blanket is through layering. Layering multiple blankets can create a thicker, more insulating cover that will keep you toasty all night. Adding a throw blanket on top of your bedspread or couch also provides a warm and cozy feel to your space.

When layering blankets, you can mix textures and patterns to add interest and depth to your decor as well. Try layering a chunky knit blanket over a solid-colored woven blanket for a cozy and stylish look.

Maintenance is Key

Proper maintenance is crucial for ensuring that your knitted blankets stay warm and cozy. Avoid washing your knitted blankets in hot water or putting them in the dryer, as this can cause them to shrink or lose their shape. Instead, hand wash them in cold water and lay them flat to dry.

Regularly brushing your knitted blankets with a soft bristle brush can also help keep them looking new and fluffy. This can also keep the knit from losing shape and becoming less insulating over time.


In summary, knitted blankets are warm due to the science behind the knitting process, the natural fibers they're made from, and their thickness and style. Layering blankets can provide added warmth, and proper maintenance can ensure that they stay cozy for years to come. With these tips in mind, you'll be able to snuggle up with your favorite knitted blanket and enjoy the warmth and comfort it provides.


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