Q: What's the difference between the C9111 and FH2530 versions shown in this listing?
A: They're two related AONIJIE multipurpose hiking packs — C9111 is the lighter ~580g version (76-118cm chest fit), while FH2530 is the slightly larger ~650g 30L version (78-120cm chest fit) with a 92% nylon ripstop build. Check the variant options to confirm which one you're ordering.

Q: What is the main fabric made of?
A: The C9111 uses an 85% nylon / 15% spandex stretch fabric with a polyester mesh back panel; the FH2530 uses a 92% nylon / 8% polyethylene ripstop with nylon-spandex elastic side panels for a secure, breathable fit.

Q: How do I know what size will fit me?
A: Both are adjustable vest-style packs — the C9111 fits chest sizes roughly 76-118cm, and the FH2530 fits roughly 78-120cm, so they suit most adult body types via their adjustable straps.

Q: How much do these packs weigh?
A: The C9111 weighs about 580g and the FH2530 about 650g — both are lightweight enough for trail running and fast-and-light hiking.

Q: What colors are available?
A: The C9111 comes in Black or Army Green; the FH2530 comes in Army Green, Blue, White, or Black.

Q: Are these packs hydration-bladder compatible?
A: Yes — both feature an internal sleeve and routing designed to carry a hydration bladder alongside your gear, making them well suited to long hikes and trail runs.