Adjustable glasses simulate instrument meteorological conditions (IMC) flight to help student pilots and instrument rated pilots advance their skills and/or remain instrument current Convenient, Lightweight Glasses Portable and lightweight, these glasses are a superior option to flight training hoods or visors for both cost and convenience. They easily slip on and off while effectively simulating instrument flight conditions, and are light and small enough to take anywhere. View Limiting Device The glasses are frosted to partially block the wearer's field of vision, and the high brow area prevents “peeking” while allowing for a full view of the instrument panel through the clear lens area. Fits Comfortably with Headsets The glasses slide on and off easily with aviation headsets. Interchangeable Lenses and Free Carry Bag Included The lenses are made from strong, durable and shatterproof polycarbonate that is also UV protected to save your eyes from the sun. This product comes with three interchangeable lenses. Clear frosted, shaded frosted, and shaded unfrosted. You'll also get a protective carry bag for transporting your glasses - included absolutely free! Click “Add to Cart” now to start enjoying your new training glasses!