This item was purchased from an authorized retailer and has been stored at home. I intended to use it with prescription lenses, but I haven't had the opportunity, so I'm selling it. It has only been tried on at home after purchase. No adjustments have been made. The following is a quote of the product details from the seller: Product Number: STAINLESS-CLEAR-LENS STYLE: Foremost Garments Flip Up 3rd Model STAINLESS x Clear Lens COLOR: Stainless with Clear Lens SIZE: 49-20 Frame Width (Max): Approximately 142mm Temple Length: Approximately 146mm These are approximate measurements. Condition: NEW Price: 32,000 yen / 35,200 yen (tax included) - Color: Silver - Material: Metal - Shape: Square - Accessories: Case, Cleaning Cloth - Made in Japan Thank you for looking.