A good accessory to have when you want to have a better hold of your Steam Deck, avoiding any potential incidents (i.e. you may drop it from your hands, etc.). They even thought of the design with docks in mind, making it mostly compatible with 3rd party Steam Deck docks and (most likely) the official dock when it does come out.
While most Steam Decks being sold would often include a pouch bag, Skull and Co. were generous enough to provide this bundle with another pouch bag. Comes with a screen cloth too.