thumb|right|A 30 L top and bottom-loading hiking backpack thumb|right|A 12 L front-loading photography backpack
A backpack is a bag worn on the back with straps that go over the shoulders, designed to carry items while keeping the wearer's hands free. It matters because it's a practical and convenient way to transport goods for activities like hiking, photography, school, and travel.
AI-generated from the Wikipedia summary — may contain errors.
thumb|right|A 30 L top and bottom-loading hiking backpack thumb|right|A 12 L front-loading photography backpack
A backpack, also called knapsack, schoolbag, rucksack, pack, booksack, bookbag, haversack, packsack, or backsack, is in its simplest frameless form, a fabric sack carried on one’s back and secured with two straps that go over the shoulders, and is used to carry goods from one place to another. It can feature an external or internal frame to transfer heavy loads off the user’s shoulders and onto their hips, reducing strain and increasing comfort on long hikes with heavy gear.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).