The Bistar Galaxy best waterproof backpack size is
11" x 5.1"x 17.3",Casual life style Protect :Large capacity inner laptop compartment, max. for 15.6 inches notebook,Plush lining material for laptop compartment; the original materials inside consist of the high quality flannelette , the pile type feels perfect care, prevent the computer from scraping . Environmental friendly material
Nice Shoulder straps or handle: Thicken padded adjustable shoulder straps,Shoulder straps & handle are specially reinforced.
It’s versatile enough to be used as a commuter backpack, a day pack, a casual-hiking pack, or an everyday bag.
https://www.amazon.co.uk/dp/B00RMKOMT6
