These are made from durable Nomex and have a simple strap to tighten up around the drivers foot.
Comfort and safety how much better does it get. Driving boots are 3.3/20 spec SFI -20 .
Boot Size: Shoe Size:
Medium 6-9, Large 10-12, XLarge 13, XXL 14-15
Wearing shoe in boot use above measurements. If your not wearing shoes it's two sizes smaller