I have only watched the first three episodes, and I don't believe there has been context for this picture presented. I've never seen such a narrow backpack before, but I'll assume they exist. Several characteristics strike me as odd:
- By as low as it sits, it is as much as a "butt pack" as a backpack, at least as Rascal is wearing it.
- The upper straps are shown restricting his arms. Is he unnecessarily binding his arms, or is that the proper way to wear it?
- If the backpack were raised high enough for the upper straps to fit over his shoulders (common for most backpacks I believe), then the lower strap would seem to fit around his upper chest, which also seems unusual.
Is this a real world item being worn the way it is supposed to be?