for Drawstrings Elastic Cord Adjuster Mask Elastic Adjustment Buckle Feature: Made of PVC material, durable to use. Mask accessories, which should be used with mouth masks (not included). Suitable for sports masks, running masks, active carbon masks, etc.. Item Name: Adjusting buckle Material: PVC Features: Replacement, Adjusting, Mask Accessories Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Note: The front and back holes are different high：9mm wide：7mm Large hole ：4.5mm Small hole ：2mm Product Type: Hangs Features: Different styles have different moods! Unique with new ideas! Advantage: our low price is a guarantee of product quality, you can rest assured to buy and use! Occasion: Place it anywhere you like, no need to be formal and traditional! Service: We promise to reply to all your messages within 24 hours, and you can reply to us at any time if you have any questions!