Tracy,
yah... lug at least 1kg or so worth of ice packs. If not how to keep the EBM cool for 12 hours. Adding the weight of the EBM, maybe ~500g, the cooler bag weight is about 2kg liao. Yep, still using 2 Avent manual pumps at the same time. The pumps are very light, portable and easy to wash. I don't even put the pumps in a proper bag. Just thrown them into a big ziploc bag. Anyway, I take about 10-15 mins to get 180-200ml from both breast with 1 letdown and some breast compression. If I continue to pump for another 5-10 mins, sometimes can get another letdown, that will give me another 20-30ml. So my best record is 230ml so far. All in all, if MS is good can get 200ml in 15 mins. If not so good, have to pump like 25mins to get the 200ml. I find that using 2 Avents can save some time, at least don't have to switch between breasts with just 1 pump and can catch and pump the letdowns at the same time. With 1 pump, once the letdown comes, can only pump 1 breast while the other breast leaks. Waste of milk!