Latex refers to the juice extracted from natural trees (angiosperms, such as rubber trees), which will solidify in air. It is a mixed emulsion of particulate polymers, and its components include protein, alkaloids, starch, sugar, vegetable oil, tannic acid, resin, gum and so on.

Beautiful back is a style of bra, which can make the back look more beautiful. Suitable for summer wear, which can effectively avoid the embarrassment of revealing the shoulder strap, but not suitable for women with excessive back fat.

The back design of a beautiful back bra is mostly composed of several shoulder straps, which can increase the aesthetic feeling of the back by crossing to form a fixed shape. Some beautiful back bras adopt front button design, while others adopt pullover design.