It looks better than I thought (even though I was looking for function, not design). Dropped my phone several times and never worry about it. I use it with a cheap glass protector for complete protection. The only problem is if the phone is face up you don't hear the speaker ringing.
I tried a few cheaper options but they had very low actual capacity. This one charges my Galaxy S4 about 3 times, so I guess you get ~8000 mAh out of it. 35% loss is not the best but it's ok. It also charges the phone with the same speed as the original charger (when using the original cable and the power bank is full) which is a problem with some other brands. Build quality is also good. I'm taking it on a round the world trip.