LoZoDoPurses for Women Top Handle Satchel Handbags Shoulder Bag Tote Purse (1-Yellow)

The picture of the grey model has some brown staining on it, Is that accurate? or does picture show incorrect stain?

Would this bag fit a 3 ring binder and still have room for other things ?

Is the inside roomy enough for a Kindle?

If it is made with real leather how can you tell?