1) length (from finger tip to the uppermost "line" on your wrist, as illustrated)
2) width, measured about 1 cm above the thumb, as illustrated
3) wrist circumference
1) Your "hat band," i.e. circumference at the widest point
2) Measure over your head from ear to ear. Please note that the measurement is taken from the top of where your ear attaches to your head, not from the top of the ear flap.