The Duchess of Cambridge wore the adult version of the Amaia London Reusable Cotton Face Mask (£12) when she visited Baby Basics's Sheffield centre in early August (Catherine wore the "Pepper" Liberty print, but there are several patterns available, including the "Hannah" Liberty design, which is shown here). The double layer, 100% cotton masks — which are designed in London and made in Spain — feature an extra filter layer, and include 5 filter refills. Not only that, but 30% of the proceeds will go to NHS Charities Together.