The majority of weighted blankets are designed with anywhere from 7-9 layers of material. Simply put, the more layers the more trapped heat and sweat. Don’t be fooled by the marketing hype of 9 layer blankets that you may find on Amazon or other internet stores. These are cheaply designed blankets with low quality fabrics. The reason they use so many layers is because the fabrics are cheap and need to be reinforced to hold the weight media securely in place. Simply put, more layers = hot and sweaty :(
Again, this is another area where the majority of manufactures cut costs and deliver sub-par products. Typically you will find most weighted blankets using low quality cotton. While cotton is usually considered a good option, it is not the ideal fabric for a cooling weighted blanket because cotton absorbs moisture creating a wet and clammy feeling. Combining high quality, high performance fabrics such as bamboo and microfiber are critical to finding the best cooling weighted blanket experience. Fabrics that are thin, strong, breathable, and moisture wicking are ideal.
This is another area where you really need to pay attention. 99% of all weighted blanket companies use excessive insulation (aka wadding) in their blanket design. More insulation = More Heat. You want to be looking for thin, minimally insulated blankets that allow for excellent breathability and temperature regulation.
Always make sure your weighted blanket is protected with a high quality cover that is easily removable and washable. All high quality cooling weighted blankets will be offered high quality duvet cover that is specifically designed to perform well with the inner weighted blanket. The best covers are made of Bamboo because if its unique temperature regulating properties, natural breathability, durability, and eco friendly nature. Micro Fleece fabric covers come in a close second and are also regarded as very comfortable and breathable with the same properties of normal fleece while having a shorter nap which minimizes thickness and heat retention.