Sanko Optical Slendy SD-029 C-14 New, Unused, Made in Sabae Frame The biggest feature of this frame is "GUMMETAL," a new titanium alloy developed by the Toyota Central Research Institute, a think tank of the Toyota Group. It is reportedly used in car suspensions. It is flexible like rubber, has high strength, and is also strong, far more resistant to rust than general titanium alloys, and is extremely gentle to the human body. It is a metal (titanium alloy) like rubber. Moreover, it is lightweight, making it very comfortable to wear. 《Size》48□15-133 Lens vertical width 25mm Frame horizontal width 128mm 《Color》Dark Gray ※This cannot be used as is. Please have your prescription lenses put in at a nearby eyeglasses store, or we can also put in prescription lenses for you. In that case, it will take 4-7 days to ship, and the fee is an additional ¥3300~ (for both eyes). Please see the profile for details and comment. ※If you purchase the frame only, an eyeglasses case etc. will not be included. We will pack it with bubble wrap in a Yu-Packet Plus box and ship it. If you purchase the lenses as a set, we will put the glasses in an eyeglasses case for lens protection, then wrap it with bubble wrap and ship it in a Yu-Packet Plus box.