10 Best King Mattress Toppers

The Silentnight Airmax 1000 King Mattress Topper is designed to add a generous 10cm of cushioning to your bed, making it a great choice if you're looking for extra softness and support on a king-size mattress (200x150cm). Made from microfibre, it offers a breathable surface thanks to Airmax technology and mesh sides, which promote airflow to help prevent overheating during the night. This feature can be especially helpful if you tend to sleep hot.

Another strong point is its hypoallergenic properties, with fibres that protect against dust mites and bacteria, making it suitable for those with allergies. The topper also features elasticated straps that make fitting it securely on your mattress easy, so it won’t slip around. It’s fully machine washable, which helps keep it fresh and hygienic without much hassle.

Weighing 4.28 kg, it’s moderately heavy, which is expected for the thickness but might make handling a bit bulkier than thinner toppers. If you want a topper that prioritises airflow and allergy protection while offering a thick layer of comfort, this is a solid option. However, if you are after very specific firmness levels or memory foam features, this might not meet those needs.

The Silentnight Deep Sleep King Mattress Topper is designed to enhance your sleeping comfort with its 5cm thickness, providing a plush layer on top of your existing mattress. Made from hypoallergenic microfiber, it is perfect for those with sensitivities as it reduces the risk of allergic reactions. This topper is not just about comfort, as it features easy fit straps that ensure it stays securely in place, preventing any annoying shifting during the night.

Its quilted cover with internal walls helps maintain the plumpness and supportive nature of the filling, which helps to rejuvenate older mattresses by adding a fresh, cushioned layer. Its machine washable nature means maintaining its cleanliness and hygiene is straightforward, which is an added convenience.

The topper, while designed to offer cloud-like comfort, lacks specific temperature regulation features which may be a consideration for those who sleep hot. Additionally, at 5cm, it provides moderate cushioning but might not be sufficient for those seeking substantial support or relief from a very firm mattress. With a high customer rating and being a top seller, it seems to be a well-received choice for many looking to enhance their sleep experience without an entirely new mattress purchase.

The Silentnight Deep Sleep Mattress Topper for king size beds is designed to add comfort and support with a 2.5 cm thickness that helps you sink into a deeper sleep. It is made from a microfibre fabric blend of 80% polyester and 20% cotton, which is soft and breathable, helping with temperature regulation so you don’t overheat during the night. The topper is hypoallergenic, making it a good choice for those sensitive to allergens or suffering from mild allergies.

An added convenience is the elasticated straps that keep the topper firmly in place on your mattress, preventing it from moving around. It’s also fully machine washable, which makes cleaning easy and helps maintain freshness over time. The topper’s thickness is on the thinner side compared to some alternatives, so while it improves comfort, it may not significantly change the feel of a very firm or worn mattress.

This mattress topper suits those looking for a simple, comfortable, and allergy-friendly option that offers moderate cushioning and easy care without extra bulk.