Describe Specifications: 100, 125, 150, 200, 250, 275, 300, 350 One box of two reusable pieces Usage: 1. Remove the lens and clean it with alcohol. 2. Gently press them on the glasses for a while, and then they will stick to the glasses. If there are any issues with the product, please contact us and we will reply to you within 24 hours. Comment: 1. The tolerance for manual measurement is 2-5g. Please don't mind your replacement. 2. Due to differences between different displays, images may not reflect the actual color of the item. Thank you. 3. SKU color is the color of the product packaging The package includes: 1 * Presbyopic mirror patch Note: 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours Hope you have a pleasant shopping experience!