I use an ARC'TERYX ARRO 22 for years. Water proof. Good for carrying a laptop. http://www.arcteryx.com/product.aspx?country=jp&language=en&category=Packs&model

I use an ARC'TERYX ARRO 22 for years. Water proof. Good for carrying a laptop. http://www.arcteryx.com/product.aspx?country=jp&language=en&category=Packs&model=Arro-22-Backpack http://www.arcteryx.com/product.aspx?country=jp&language=en&...