These Masks are Silky Satin Silk on both sides, Super Soft, lightweight & breathable, great for the summer. Lightweight and breathable. Designed and cut on an angle to follow and fit the natural contours of the face for snug comfort. two elastic hoops to fit comfortably over the ears.Reusable and washable. Lightweight and breathable. This mask has been specially developed as a 3 ply mask with sleeves that doubles up as a jacket for an additional mask. Manufactured in line with WHO guidelines, this is washable and reusable.