Specialty stores that buy underwear generally have girls' underwear and vests, which are mainly suitable for their upper circumference (the largest circumference) and lower circumference (the smallest circumference). Try not to choose those with rims. About tube top: it is a kind of clothing style, which refers to the style without shoulder straps. Bra refers to underwear, and bra is the tights of ancient western women.
This is a tube top