The quality of the bag is definitely above average, I wouldn't say it's the best but it's a quality bag. The only issue I have is the included USB cable that attaches to the side of the case. The problem is that this assumes I'm traveling with the phone on the outside of the case, making you a target for theft and putting you at risk of water/shock damage if the phone is outside. Placing the power bank outside would totally defeat the purpose as you would not have access to your phone in your pocket which was not the intended purpose. Aside from that useless part, this is a good product.