What is a "haversack"?

A haversack is a type of bag that is traditionally made of canvas or other durable fabric and worn over one shoulder. It usually has a single strap that can be adjusted to fit the wearer's body. Haversacks are typically used by soldiers and hikers to carry essential supplies and equipment. They often have multiple pockets and compartments for organizing and accessing items quickly. Haversacks are designed to be lightweight, durable, and easy to carry for extended periods, making them an excellent choice for anyone who needs to transport gear over long distances. They have a long history of use in military campaigns and outdoor adventures, but they can also be used for everyday activities, such as shopping or carrying books.