Simply put, a soft baseball cap. But not a snapback, flatbrim, or fitted. A dad hat is a baseball cap that's canvas or cotton and has a slightly curved brim.
Dad hats are a classy fashion accessory that can be rocked by both men and women in any casual setting. They are accessories that are worn across all age groups. They are no longer a reservation for men! They look trendy when paired with street or sporty wear.