Wildcraft 15.6 L Laptop Backpack Climber Blue  (Blue, Black)

I think the bag will suit your requirement as it has enough space to keep other stuff along with the Laptop. The 15'' laptop fits tight which could be intentional.
I once had bought adidas bag from myntra for around ?1300 which was smaller and less spacious. This wildcraft bag for ?924 is definitely better in that regard. But my previous bag proved its worth as i have been using it for the last 4-5 years. I don't know about the durability of this bag but I have got the kind of bag i wanted.

Good quality bag at low price ,it is compact and has separate compartment for laptop,pen, and ID cards and as always well packed from flipkart.I really like it.

best laptop bag for 650 rs .. huge storage and good looking .. its perfect for 15 inch laptops .. gray color is looking good than this check out that before buy this ..