Almost 100 five star reviews, most of the other similar backpacks are £30+.
The backpack is £29.99 but there is a promotion taking £6 off.
Blurb from Amazon:
Size -- Medium adjustable laptop sleeve (11.4*14.3") fit for 12.1 - 15 most 15.6 inch Notebook/Macbook. Spacious room pack cloth, A4 Binder and files, electronics for daily life or 2 days travel.
Details -- Slim outlook with little blue bring color to black computer bag. Zippered side pockets hold little stuff safely, extra elastic band for water bottle/Umbrella when need
Safety -- Anti theft zipper dual layer can resistants stab. Zippers can be locked with luggage lock. Back waist pocket keep all your valuable things but easy pick
Quality -- Water resistant anti wrinkle anti scratch thick Nylon. Keep a good status after even long time usage. Heavy duty shoulder strap and wear-restant velcro
Comfort -- Ergonomics S shape strap Fit human body well, shoulder straps are and backside with 3 areas of thick pads for great comfort, breathability and maximum back support while traveling.