Bikini variants the most diverse range of bikini merchandises. Bikini tops come in several different styles and cuts, including a halter-style neck that offers more coverage and support, a strapless bandeau, a rectangular strip of fabric covering the breasts that minimizes large breasts, a top with cups similar to a push-up bra, and the more traditional triangle cups that lift and shape the breasts. There are four fundamental types of bare-midriff bikini tops: the "brassière", "halter", "bandeau", and "vest". These styles are differentiated by the number of shoulder straps and the resultant number of edges to the garment. Some of these tops
Shelf life to the front of the shelf, so that most shoppers will pick them up first and thus they are likely to be sold before the end of their shelf life. Some stores can be fined for selling out of date products; most if not all would have to mark such products down as wasted, resulting in a financial loss. Shelf life depends on the degradation mechanism of the specific product. Most can be influenced by several factors: exposure to light, heat, moisture, transmission of gases, mechanical stresses, and contamination by things such as micro-organisms. Product quality is often mathematically modelled