Venum "Challenger Pro Backpack Water and hard resistant polyester fabric Laptop storage pocket fits up to 17" & Specific MP3 player pocket Large main zip compartment & Half-zip front pocket with multiple storage space Bottle storage with laces system closure & Ergonomic padded with mesh panels Removable hook for your keys Laptop storage packet fits up to 17 inch MP3 player pocket Large main zip compartment Half-zip front pocket with multiple storage spaces