A bra without straps is suitable for straight sweaters or open-back blouses. Any clothes with a large neckline or a lot of exposed shoulders can be used with peace of mind. Most of these bras are also equipped with steel wires, so that all the breasts can be concentrated and fixed, so there is no need to worry about the bra slipping off. In addition, there are bras with the shoulder straps that can be removed at will. If you wear a straight sweater instead of a bra, you can wear this kind of bra to increase the fullness of the breasts.