Suggest : Bag which I can wear while riding a bike

Adidas Originals Unisex ST Bpack GR Black Backpacks | Myntra
I know its outta your budget, but I mean Cmon, it looks awesome!

Here are some in your budget:
Nike Unisex Casual Grey Backpack | Myntra

United Colors of Benetton Unisex Polyester Black Backpack | Myntra

Adidas Unisex ESS Red Backpack | Myntra