Must Have | Doctor's Bag

What I want now is a sturdy black handbag. A purse that will stand up without assistance and hold my daily essentials without them getting lost in an abyss. Is that really too much to ask? I think no. I have always had a not-so-small obsession with the Doctor's Bag which has a pop up type opening that I find unique...and I really must have! Problem is since they are unique I cannot find one I like for the life of me.

I need a black bag and the few Doctor's Bags I do find that are cute, are brown or tan. I have a Mulberry satchel for my staple brown bag. Know I need my staple black bag. This one above would actually a spot-on must have men's bag for any stylish gent in the market for  good bag. Go for that rad umbrella too!

Of course Serena Van der Woodsen has my bag! Anyone seen my black doctor's bag? 

I'm in definite search for it, and if you can help I'd be much obliged!

What is your must have bag?