Was leaving the house for town with my 6-day old Surface Book in a near-fitting handy case whilst awaiting the Waterfield Microsoft Surface Book Solo bag I ordered recently, when the new case was delivered just as I closed the front door. Got off the train and into the street and immediately tripped and fell over, I sprawled and hit the deck, and so did the bag. A few nice people helped me up and enquired about my health; I only had one concern. Dreading what might have happened I went to a coffee shop. got a drink sat down and opened the bag with extreme trepidation. It is completely unharmed. In the circumstances I feel obliged to recommend it!