10 Best Cool Mattress Toppers 2025 in the United States

The Niagara Ultra Soft King Size Mattress Topper is made from bamboo viscose and polyester, offering a gentle, hypoallergenic surface that’s great for sensitive skin. It’s designed to fit mattresses from 8 to 20 inches deep and measures a standard king size (78x80 inches). This topper is ultra-soft with a pillow-top style, providing a cloud-like cushioning that may help ease back pain. Its cooling and sweat-absorbent properties make it suitable for hot sleepers looking to stay comfortable throughout the night.

The topper is relatively thin but provides enough softness to enhance firmness without feeling too firm or too soft. It has deep pockets and stretchy sides to stay securely in place without sliding. A key convenience is that it’s machine washable, helping with easy maintenance and keeping it fresh. However, it’s not water-resistant, so spills may soak through.

While the product promises durability, the polyester and bamboo blend means it might wear faster than toppers made with high-density foam or latex. Also, while it’s great for softness and cooling, those needing very firm support might find it less suitable. This topper is ideal for adults seeking a soft, cool, and skin-friendly mattress enhancement that’s easy to care for, especially if they prefer a softer sleep surface and have back discomfort.

The Viscose Made from Bamboo Full Mattress Topper by Niagara Sleep Solution offers multiple benefits and a few drawbacks. Its high-quality bamboo viscose material promises an ultra-soft and gentle feel, which is great for sensitive skin. With a thickness suitable for mattresses ranging from 8 to 20 inches deep, it fits well and remains secured, thanks to its stretchy sides. The cooling technology, combined with sweat-absorbent properties, ensures a comfortable sleep experience, which is ideal for those who overheat at night.

Additionally, it’s hypoallergenic, eco-friendly, and free from harsh chemicals, making it safe for most users. The topper’s dimensions are 54x75 inches, and it’s designed to enhance mattress comfort with a cloud-like cushion that could help ease back pain, making it a good option for those seeking pain relief. Maintenance is straightforward since it’s machine-washable and dries fluffy, so bed sheets stay in place.

However, it’s not water-resistant, so spills could be an issue. Some users might find it does not suit their firmness preference as it’s described as a 'hard topper.' Those needing a softer feel may need to look elsewhere. This mattress topper is a solid choice for anyone seeking a cooling, hypoallergenic, and comfortable addition to their bed.

The Tempur-Pedic TEMPUR-Adapt + Cooling 3-Inch Queen Mattress Topper is designed for those seeking improved comfort and cooling for their mattress. One of its standout features is the 3-inch thickness of TEMPUR-ES material, which adapts well to your body shape and weight, providing personalized support. This topper is particularly appealing because it includes a cooling cover that can keep your sleeping surface up to 8° cooler throughout the night, making it ideal for warmer climates or those who tend to overheat while sleeping.

The washable cooling cover is another plus, as it offers convenience for maintaining cleanliness. The high-stretch fabric is breathable, enhancing the overall comfort. Given its size (79.5 x 59.1 inches), it fits perfectly on standard queen mattresses, making it versatile for home use or even in dorms and RVs.

There are some drawbacks to consider. The topper has a medium firmness which might not suit everyone's preference, particularly for those who prefer a firmer or softer feel. While the topper is durable, the care instructions recommend avoiding harsh cleaning agents for the core foam, which may require extra caution when cleaning. Additionally, at nearly 25 pounds, it may be heavy for some users to handle easily.