I am a supervisor and in college so I needed a backpack that I could take to work and college and I stumble on this piece of beauty right here. It is super heavy duty and it keeps my laptop and iPad on the back and has a locking mechanism. I also have my chargers and extra cables and mobile WIFI on the front compartment. Its like having a portable office!!!!!, I can set up literally anywhere and I will be set. It is water proof up to a point, it is well built and that makes the backpack amazing for construction. Its hard to get dirty !!!!!!! like i clean itr with a baby wipe once every 2-3 months and its brand new. The ONLY THING WITH THIS BACKPACK IS THAT is HEAVYYYYYYYY. If you don't have the back strength to carry anything in your back while walking then its good. I got used to the heaviness so it doesn't bother me but every one that has carried it say that is so heavy for what I have inside. Your Welcome and i would recommend it to anyone in the field that need a same spot to store a laptop and tools