I needed a high visibility, well made, low cost back pack for my daily commute to and from work. during the winter months I may get caught in the dark on the rides so a reflective hi-vis bag was needed (along with lights on the bike of course). For the money, this is the bag to get. The reflective taping and straps are durable and the bag is high quality with enough pockets for all you stuff, including a laptop. It's not waterproof so a cover may be needed and I would suggest a reflective hi-vis cover which can be purchased for about $20 on the internet if you look under commuter equipment.