The K&F Concept one-shoulder backpack has really been able to satisfy my need to carry my drones into the mountains in absolute comfort. Of course, objective considerations aside, this review will focus on the specific use of the undersigned. I have no specific interests in "ground" photography and I don't have that type of specific equipment. Limited to drones, related remote controls and accessories, this backpack is truly very practical. It allows really easy access via the side opening on three sides of the main compartment and all the contents are immediately available. An additional pocket is also available in the upper part, for example for other personal objects. The interior of the main compartment is totally modular, thanks to two long, three short separators and an elastic band. All equipped with Velcro flaps capable of attaching to the internal walls of the backpack itself. In this way it was very easy to create perfectly sized compartments for the remote control, the drone itself, the chargers, the propeller guards, etc. The finishes are made with care and I find the lateral system really ergonomic. Unfortunately it is ideal for right-handed people, decidedly less so for left-handed people, but it is still usable. It is naturally not a rigid suitcase: therefore if you need to transport your precious cargo in conditions of total protection and safety, it is simply not the right product. Personally, for my use, for the design and for the workmanship - the zips for example are very smooth - I really find it to be a very valid backpack.