Cabin baggage is what you carry into the cabin. Size and weight are set by the airline fare and enforced at the gate. Liquids, spare lithium batteries, and sharp objects follow aviation security at KBL and the transfer airport — not a Sharifi Neya policy page. Rules change. Confirm visas, transit, and baggage with the airline and the relevant embassy before you travel. Is a backpack extra to the cabin bag? Some fares include a personal item, some do not. Read the cabin line on your fare.