Note:
1.Only 19 inches with expandable structure,15.6 inches without.
2.Only 15.6 inches with glasses holder on the shouder strip, 19 inches without.
FEATURES:
1. Expandable capacity
2. RFID function
3. Quick usb charging
4. Splashproof material
5. Anti theft four-footh double zippers
6. Luggage strap