I figure you probably have more than 18 bucks in your car ashtray.
Only $17.99 plus $4.99 site-wide flat-rate shipping (*some exceptions for large over-sized items).
This vintage-style rucksack from East India Co. is old-school. Heavy-duty canvas construction and reinforced nylon bottom. Drawstring closure and clip closure on main compartment. Divided interior compartment with velcro closure. Padded & adjustable shoulder straps. Four D-ring locations. Two side pockets for water bottles. 18 bucks? Big 20"x13"x7" size? No-brainer.