backpack bag leather black Bowery Laptop Backpack, Chocolate Leather by WaterField Designs, Men's Leather Backpack, Men's Backpacks, Made in USA Nike Max Air Vapor Model:TSAWEDSS-963M / 9'6" / 3/4 - 3 oz Adidas 5-Star Team 2 Backpack - 12.5L" x 10.38"W x 19.5"H on luggage handles (or

backpack bag leather black Bowery Laptop Backpack, Chocolate Leather by WaterField Designs, Men's Leather Backpack, Men's Backpacks, Made in USA Nike Max Air Vapor Model:TSAWEDSS-963M / 9'6" / 3/4 - 3 oz Adidas 5-Star Team 2 Backpack - 12.5L" x 10.38"W x 19.5"H on luggage handles (or

Nike Max Air Vapor Backpack in Team Orange and Black

Throw it on your back easily, or carry it by the handle

Adidas 5-Star Team 2 Backpack - 12.5L" x 10.38"W x 19.5"H

Model:TSAWEDSS-963M / 9'6" / 3/4 - 3 oz

Finally, you need to look at the weatherproofness of any backpack you are considering if you live in a place prone to rain

on luggage handles (or to use as umbrella storage when closed)