Please check the pictures and don't hesitate to ask any questions about the item! I send a product by DHL. We sterilize all our products with alcohol. And the optics are cleaned with a lens cleaner.Immediately after shooting, it is placed in a closed container with desiccant and stored for 24 hours and 365 days in a temperature and humidity controlled warehouse. By weight and shape of each product, we use 13 kind of cushioning materials and pursue safety and weight reduction. All return requests must be made within 30 days of the receipt of the item.