Meaning
A school-style backpack with shoulder straps and a front pocket, usually in a bright colour. It suggests being ready to go, with everything you need on your back.
It covers back-to-school season, students, hiking and backpacking trips: “First day of school tomorrow 🎒 everything’s packed.” Travellers use it for budget trips and adventures, often with 🗺️ or ✈️, and parents send it with photos of kids heading off to class.