Roof-Prism LightPath. Anti-Reflection Multi coatings. Closed Bridge Configuration. Compact Take-Anywhere Design. As It Is Palm-Sized And Easy To Use, It Can Be Easily Taken Everywhere And is Also Suitable For Sharing With Children. If You Have Differing Prescriptions in Each Eye, You Can Adjust The Left And Right Lenses Independently. The Stylish Two-Tone Color Design is Cool.