Q: What is the AONIJIE C9116, and who is it designed for?
A: It's a lightweight 10L running backpack/hydration vest built for trail runners and hikers who want to carry water, snacks, and small essentials without the bulk of a full-size pack — at roughly 240g, it barely adds weight to your run.

Q: What's it made of, and how does it feel against your body?
A: The vest body blends 85% nylon with 15% spandex for a snug, stretchy, second-skin fit, while the polyester fibre mesh panels add breathability so you stay cool and chafe-free over long distances.

Q: How do I pick the right size?
A: Sizing is based on chest circumference: S fits 66-78cm, M fits 78-90cm, L fits 90-102cm, and XL fits 102-115cm. Measure around your chest at its widest point and match it to the closest range for a snug, bounce-free fit.

Q: Is the C9116 compatible with hydration bladders or soft flasks?
A: Yes — the vest's interior sleeve and front straps are designed to hold a hydration bladder or soft flasks securely, so you can sip on the move without breaking stride.

Q: Will I notice it while running long distances?
A: At about 240g, the C9116 is one of the lighter options in its class. Combined with the stretch-fit nylon-spandex build, it moves with your body and minimizes bounce, even on technical trail runs.

Q: What color options are available?
A: The C9116 comes in two colorways — black-white and black-red — both designed to pair easily with most running and hiking kits.