Understanding how milk production works can help moms in their efforts to establish good milk supply. This is like the 1am to 5am stretch of time. Purelan is also good and cheaper. Some suggest drinking dark beer, with or without alcohol. You can use an old nursing bra and just cut slits in the flap. Most experts agree that whatever the reason for pumping, moms should pump for about 20 minutes. Experts also encourage pumping about five minutes past when the milk stops flowing, often by doing so mom will elicit another letdown, and at the very least will maintain production as well as encouraging increase in supply if needed. Ziploc seems to have a much higher rate of leaks.