trucker hat

Similar to a baseball cap, usually with a foam brim and front section and a breathable mesh back section.

A trucker hat, mesh cap or netback cap is a type of baseball cap. It is also sometimes known as a “gimme [as in ‘give me’] cap” or a “feed cap” because this style of hat originated during the 1960s as a promotional give-away from U.S. feed or farming supply companies to farmers, truck drivers, or other rural workers.