|Tween Bee Microfiber Demi Bra (2195). Designed for girls 9 to 13; a great bra basic that's specifically designed for tween girls who are just developing. Made of nylon and spandex. Contour/t-shirt underwire cups are lightly padded with smooth; microfiber exteriors for no-show-through coverage. Bandless front is great for petite and short-waisted young women. Arched center panel with ribbon and clear bead decoration. Stretch microfiber sides have sewn-on elastic bands at top and bottom for fit. Wide-set straps are exposed elastic with soft backing; and adjust at back with plastic hardware. Straps can be converted at back into a more supportive crossover style. Hook-and-eye closure at back with coated metal hardware. Please see Fitter's Comments below for hook count.