We all know how much better life feels after a good night’s sleep. It’s not just about getting enough hours, it’s also about feeling cosy, calm, and comfortable while you rest. One thing that doesn’t always get enough attention? The blanket you’re sleeping under. 

If you’re trying to decide between a wool blanket or a cotton one, it’s worth taking a moment to think about how each fabric works with your body—and what kind of sleep experience you’re really after. 

At Waverley Mills, we’ve been working with natural fibres for over 150 years, so we’ve learned a thing or two about what makes for truly restful sleep. Let’s walk you through the differences between wool and cotton, and help you find your perfect match. 

Temperature Balance: Staying Warm Without Overheating 

Wool adapts to your body, cotton keeps it simple  

If you often wake up too hot or too cold, the blanket you’re using could be part of the problem. 

Wool is naturally temperature-regulating. Thanks to its crimped fibres, it traps pockets of air that help insulate in winter and breathe in summer. It reacts to your body temperature, helping you stay in the comfort zone all night long. That’s one of the reasons why wool is often the choice for year-round use. 

Cotton, while breathable and soft, doesn’t insulate in the same way. It tends to absorb moisture rather than wick it away, which can lead to feeling damp or cold in cooler conditions. For warmer climates or summer nights, cotton can feel light and fresh but it doesn’t adjust to temperature shifts, so it’s not always the cosiest option when things cool down. 

Managing Moisture: Staying Dry and Comfy 

Wool helps wick moisture away while cotton tends to hold on 

If you get warm or sweaty while you sleep, the right blanket can make a big difference. 

Wool has a unique ability to pull moisture away from your skin and release it into the air—without ever feeling damp. In fact, it can absorb up to 30% of its own weight in moisture before it starts to feel wet. This keeps you feeling dry and fresh, even on warmer nights or in more humid spaces. 

Cotton is also breathable, but once it absorbs moisture, it holds onto it. That can leave you feeling a bit clammy or cold once it gets damp. 

Texture and Weight: The Feel-Good Factor 

Cotton is light and breezy; wool is soft, warm, and grounding 

Cotton blankets tend to be lightweight and soft, with a smooth feel right from the start. They’re a great pick for hot climates or for anyone who prefers something lighter on their bed. 

Wool blankets, especially those woven at Waverley Mills, offer a different kind of comfort. They’re slightly heavier, but in a grounding, cocooning way. Our wool throws and blankets are designed to feel substantial without being overwhelming bringing a sense of security and calm that many people find deeply restful. 

Sustainability and Longevity: A Blanket That Lasts 

Wool is natural, renewable, and made to last 

Both wool and cotton are natural fibres, but wool has some clear advantages in terms of sustainability and durability. 

Wool is renewable and biodegradable, and when cared for properly, it can last for decades. That makes it a wonderful long-term investment in both comfort and the environment. 

Cotton, while natural and widely used, generally wears out faster—especially if it’s conventionally grown, which tends to use more water and chemicals during production. 

So, Which Is Better for Sleep? 

It really comes down to what you need most but wool brings something special to the table 

There’s no one-size-fits-all answer here. If you love the feeling of something light and breathable, cotton might be perfect for summer nights or warmer climates. But if you’re looking for something that works year-round, helps keep you dry and comfortable, and stands the test of time. Wool is a pretty amazing choice. 

At Waverley Mills, we choose wool not just because of its performance, but because it reflects what we believe in: thoughtful comfort, sustainability, and the beauty of things made with care. 

Because when it comes to sleep, the little details, like a blanket that feels just right, can make all the difference.

Browse our wool blanket collections.