Breast Enlargement Cylinders are a great and natural way to increase your breast size. This product is sold individually - SINGLE CYLINDER ONLY.Size Large (4 7/8 in at base): Choose this size if you are a C Cup and want to increase to D Cup sizeWe suggest if you have a partner and wish to pump two breasts at a time that you purchase a buddy T-hose connector with another clinder to pump with the same amount of pressure. The breast pump will work without the T-connector and is great should one breast be larger than the other but we suggest this for ease of use if you wish to pump two breasts at the same time. Available in 3 Sizes Only, increase one size at a time to get best results, for example: if you are a B cup now choose our B size, this will help you increase to a C cup, until you attain the very next cup size.Sizing InformationSize Small (3 1/2 in at base): Choose this size if you are smaller than an A cup and want to increase to B Cup sizeSize Medium (3 7/8 in at base): Choose this size if you are a B Cup and want to increase to C Cup sizeSize Large (4 7/8 in at base): Choose this size if you are a C Cup and want to increase to D Cup sizeSize X-Large (5 3/4 in at base): Choose this size if you are a D Cup and want to increase to DD Cup sizeNOTE: This product does not include a hand pump or hose!!Here is a safe and natural methOd to enlarge your busts using the LA Pump Enlarging System without the need for medication or surgery. may be right for you. Air pressure is used to bring blood into the mammaries thereby increase their size. In no time at all you will see significant short term results with longer term results being achieved after about on months use. In three months maximum long term growth should be attained.