From Calla Products...
The Metro Hard Shell Backpack's lightweight, sleek design is the ultimate in men's gear. The hard shell case is water-resistant and shock-absorbent, while the back panel is designed with soft padding for maximum comfort. The versatile, zippered back strap allows the Metro to be worn as a backpack or sling. The external USB port offers convenience in charging your phone or other devices (power bank not included). The Metro also offers a unique built-in combo lock to protect your belongings. Perfect for daily use as well as travel.
DIMENSIONS: 2 1/2"W x 8 3/4"L x 14"H
WEIGHT: 13.5 ounces