Buy Silhouette Glasses MOMENTUM 5529/70 7520 52 | GEM 。These Silhouette women\'s frames are hand made in Austria and direct from Silhouette, never been worn. They are made with precision and dedication that their glasses last for many years. Silhouette glasses are special because they have no screws in them that can come out. They are very durable and won\'t break if they are dropped. The frames have demo lenses in them, which means they don\'t have a prescription in them. The glasses can be taken to an optometrist to have prescription lenses put in.