womens Cotton String Bralette, 3-pack Bra

I usually purchase this Hanes bra in a size 44, how and why is this sizing you have relate to the previous sizing?

Others saying size chart is off go with an xs or small for a 34B?

What colors contain polyester?

Do these come with Hanes tags or in any Hanes packaging? I received 3 taped together in an unmarked plastic package.