Pump with your shirt on! Freemie collection cups allow you to pump using the collection cups placed in your own bra, under your shirt. Cups hold up to 8 oz each. To use with an Ameda Purely Yours pump, you will need to purchase the Connection Kit. This set includes: 1 set of 2 cups, 25mm and 28mm funnels, (2) valve bases, (2) valves, (1) spare valve. Collection Kit included for Medela/Hygeia brands.