A fitted hat is the kind of hat the will fit snugly around the entire crown of your head rather than just around the outer edge. We have many different brands of this type of hat including Taylor Made, Nike, and Adidas. Fitted hats typically come in three different sizes which are small-medium (S-M), medium-large (M-L), and large-extra large (L-XL). DGW has sizing guides available to you if you aren't sure of your hat size.