verifyErrors }}{{ message }}{{ /verifyErrors }}{{ The Silentnight Airmax topper is available in 2 versions that have different heights. For this review, I tested the 500 one which has a 5cm height. However, both the 500 and 800 (8cm) versions feature identical designs. The inside of the topper is full of hollowfibres that are positioned in 2 layers. Hollowfibres allow airflow and are hypoallergenic. This makes this topper an ideal choice for people with allergies or respiratory ailments. The cover is made of polyester and features side mesh panels that further increase airflow. This is a clever design that works great. Moreover, the topper has 4 elasticated straps that are there to keep it in place. They look durable and hopefully, they will last for a long time. The topper is machine washable and if you want to clean it, you can use mild detergent and a gentle cycle. Overall, this topper is well-made, especially for its price. Support & Comfort