The Aqualight designation is used by the British company Snugpak for a polyester-based fabric that has water-repellent properties and is at the same time very lightweight and durable. It is used, for example, as the outer layer of the Snugpak brand sleeping bags composition.
The Aqualight fabric has a very light 190T polyester construction, while its fine to silky texture is very soft to the touch. This type of fabric also has water-repellent properties, so it is suitable, for example, as an outer functional fabric for sleeping bags.