509 Unisex Apparel Size Chart
Chest: Measured under arms and around the fullest part of the chest. Keep the tape level across the back and comfortably loose.
Sleeve: With the arm fully extended, measure the center-back of the neck, at the spine, to the wrist bone.
Waist: Measure around the natural waist line with a comfortably loose tape.
Inseam: Without footwear on, measure the inside of the leg, from groin to the floor.
Castle X Unisex Apparel Size Chart