Trucker Hat Mesh Back Snapback One size fits most! Trucker Hat Mesh Back Snapback Polyester/Nylon Snapback adjustable strap Snapback trucker hats allow for it to be a one size fit most kid of a hat. Flexible Bill Flexible bill allows for comfort and adjustable for each customer. Mesh Cap Mesh back to the hat allowing the heat out and the sun off your face. Soft forehead lining Always about comfort, this lining on the forehead makes the hat wearable all day every day.