I had the same concern, but it does fit under leathers pretty well. If your jacket/suit already fits very adjusted, you might feel a little tight wearing the vest. But you can remove your jacket's inner foam paddings and this shall to compensate for the extra space taken by the vest.

The problem is that there are no options for a combination back/chest protectors for women. Yes, Alpinestars makes bionic chest plates to be inserted into jackets, and Dainese makes a chest protector to insert under the jacket, but neither is designed to work properly with any back protectors... so there are numerous options for guys, but for girls there aren't any, except getting this one and chopping off the sleeves....

no this is not a vest of any sort. Its a very comfortable breathable layer with pads. Its ments to be warn under an outer layer that has no pads.

The methodology is that this thing keep the pads close to your body so they dont move around. then you wear the jacket on top. tada!

babylon!

It sounds like you want back and chest protection without the shoulder and arm pro? If in fact this is the case, Alpinestar makes this piece and I'm pretty sure that Revzilla sells it. If not, Dianese also make a version of it. Good luck.