As a 70kg female the Leatt 4.5 Pro Chest Protector is a little big on me. The shoulder cup and bicep straps are done up as tight as they can be but still flop around a bit and don't fit snugly. It sits a little heavy on the points of my shoulders and I'm thinking of putting a little patch of neoprene or something in the underside to stop the small bit of pressure I get there. I suspect that anything that's not a mesh pressure suit (which is what I used to wear before the Leatt) would feel the same. I can't tighten the strap around my waist any more to distribute the weight of the armour better either. Don't get me wrong, it's a great protector and I bought it mainly because I wanted a great fit for my new Leatt neck brace to fit into but I think it's probably a little big for a woman 171cm tall and 70kg. I chose this one over the womens one as I wanted some shoulder protection (the chick's one does not have any) but I wonder if I might have been better buying the women's specific armour instead. A Leatt representative suggested I get this one and that the women's one was more for girls with a fair sized rack.