The color is navy blue only.
Size Guide:
M: Ankle circumference: 7.1 - 8.7 inches (18 - 22 cm); Middle school (people with good figure), high school, women, slim people.
L: Ankle circumference: 8.7 - 9.8 inches (22 - 25 cm); High school, general purpose
LL: Ankle circumference: 9.8 - 11.0 inches (25 - 28 cm); General (for people with a good figure).