Not too big, but not too small either. Fits my tablet and its charger, sunglasses, ear-buds, cell phone and spare charger, and other misc junk I might want to cary around.

Very sturdy as well. I've had it for about 3.5 years, use it every day, and it shows very little wear considering the amount of abuse it puts up with. The only sign of age is that the "trim" around the edges has started to fade a bit.