Sof SoleInsoles Men's ATHLETE Performance Full-Length Gel Shoe Insert

Are these insoles true to size? i usually wear a mens 9.5(us)

Is the arch rigid, soft, or flexible

Men & Women size are the same or not?

I have a pair of shoes that are not sneakers. as a matter of fact they are chukka boots & would like to know if i can use this type of inserts? thanks