This is an awesome bag! The only issue that I was confusion over how to use the power charging cable and connection. Whether I missed it or not, the confusion I had was whether the connection and cable supplied was an input or an output to the power pack that you put optionally inside the case. I initially was thinking that it was an input charging the power pack so your items would be ready for travel. That is not the case. Instead, it is an output for your power pack that is already charged so that you can charge a device from your case to an outside device such as a phone or tablet, etc. Both connections supplied are USB type a connections. This is something to keep in mind when you purchase your power pack and cables for your devices. This is a wonderful bag and an excellent value. I have already put this bag to great use. I use this for an iPad Air 5, Amazon Basics Ultra-Portable Fast Charging Power Bank Battery / 26800mAh, number of cables, USB power adapters, wireless earbuds, pencil and paper and any number of things and there’s plenty of room. It is the perfect size. I am a big guy. It has a long strap and can sling across my chest, to my side and / or slide in front of me while working in a public place so I don’t walk off and forget it. Hope this helps!