Anti-Allergy: Made from anti-allergy microfibre to help alleviate symptoms for allergy sufferers. Thick Mattress Topper: Get an extra thick mattress topper with four inches (10cm) of deep filling. Easy Care: Can be machine washed and lightly tumble dried. Extra Thick: Made with soft, bounce back, anti-allergy microfibre material. Five Sizes: In single, small double, double, king or super king. | 4" Thick Mattress Topper | Wowcher