ConverseMen's Taylor Chuck 70 Hi Sneaker

What does the whole b (m) stuff mean? i'm a size 9 in women and i'm trying to see which size i have to order and the whole b (m) thing is confusing

These say 'women's & I am buying for a guy but all the comments are women asking what size to buy for men's size. Can you clarify which it Is?

My size for standard all stars is men’s 5, should I stay with that or go down to 4.5?

I normally wear a size 7 for shoes. I read somewhere to size down. Does that mean I should order a size 6?