Hard lining and soft lining (without lining)
The front piece of some baseball hats or flat tongue hats will fit the interlining. Interlining is a kind of composite fabrics, such as suits or shirts, there are interlinings used in the collar and cuffs. The hat will be used, and the most commonly used is the front piece lining. Different fabrics match different soft and hard interlining fabrics. Hard-lined hat, also called hard top by netizens
Hard lining (hard top)
A washed baseball hat has no lining (no lining) or hanging lining on the front. Netizens said that the soft top is also correct. The relxed hat has another interesting name, dad hat. This kind of hat is a versatile style, often used to match sweaters and jeans. Don’t worry about the shape of your face, they all match well.
Truck hat (truck hat). It is a version of baseball hat, most of which are hard lining. The last four pieces must be hard nets. This kind of hat is called a truck driver’s hat.