Delta Laptop Backpack by Harissons Bags is ergonomic and one of the practical backpack you would ever find.
A part of 'Quadraquip Series' this backpack comes with Rain cover, Handy Pouch, Laptop Compartment, Ergo Grip Backstraps. Apart from the add-ons this backpack also has features that can't be ignored.
It comes with a secret pocket that protects your valuable belongings from thieves. Plus, it is light-weight and comes with a Two Point Suspension System which does not put a load of the bag on your shoulders but absorbs it instead.
it also has a dedicated laptop sleeve which can fits laptop up to 15.6" Inch easily.