Small = 8-9, Medium = 10-11 and Large = 12-13.
Man Made Material
Circumference at ankle is about 10"
Circumference at mid to upper calf is about 18" - 19"
Full-length zipper is sturdy and works perfectly, Zipper runs on the inside of the leg make them easy to put on and take off
ELLIE 121 JACK Mens boots B00Q80KK92