Union Printed, Silicone Face Mask Extenders Hooks. Get this adjustable face mask hook strap to ease you while wearing your protective gears features silicone material so it's easy to wash! Compatible with most of the ear-mounted masks on the market. It has a friendly design w/ the 3 slots, easily clip the mask at the back of the head. Ears will be released comfortably. Printed with your logo! Available in 5 great colors. Decorated in our Union Shop - Union Bug available at no charge!