- 39THIRTY collection
- Embroidered "Hurley" and logo flexfit hat
- Nike Dri-FIT
- 97% Polyester, 3% Spandex.
- Do not wash.
This official Authentic Collection 39THIRTY batting practice cap is worn by all Major League BaseballÂ® players throughout Spring Training and all in-season pre-game workouts. Performance is enhanced through CoolBase vapor management, superior drying, and shrink resistance.