Why do bras have hooks?

Bras have hooks because they create the adjustable foundation that transforms your undergarment from a basic piece of clothing into a precision support system designed to work with your body. The hook-and-eye closure allows you to fine-tune the band tension, which provides 80-90% of your bra's lift and support, both when your bra is new and as the elastic naturally relaxes with wear and washing over time.

This adjustability means you can start on the loosest column of hooks and gradually tighten inward, extending your bra's supportive life while accommodating natural body fluctuations throughout your cycle, day, and lifestyle changes.