These are the perfect essential accessories for your face masks! For DIY Face Mask making, these aluminum nose bridge strips bend and conform to the shape of your face, and don't rebound or change shape like some other cheaper materials. This is a high quality aluminum that bends and shapes easily, and is also easily cut down to smaller size for smaller masks/faces. Universally sized at 90mm length, these nose strips are 0.5mm thick and 5mm wide. They also come pre-made with 3M adhesive tape, to simply tape them to the outside of your masks - they adhere perfectly to any cloth masks (poly / cotton etc) as well to even medical grade disposable masks.