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One session is 15 minutes of pumping (double breast pump) or 30 minutes of
pumping (single breast pump).
Sizes of the breast shields and inserts
The Philips Avent hands-free breast pump has a soft breast shield that can be
used individually or with a flexible silicone insert for a better comfort. There
are multiple sizes available.
Measure your nipple to find the most suitable breast shield and, if necessary,
the insert for you.
1 Use the nipple sizing card that is included in the package or refer to
www.philips.com/support to measure your nipples.
2 Stimulate your nipple prior to measuring your size.
3 Place the nipple sizing card around your nipple. Make sure there is a space
of 0.5–2 mm between your nipple and the hole in the nipple sizing card.
4 Try various holes to see which opening fits your nipple best. If needed, view
fitting in a mirror.
5 Select the breast shield (and the insert) that matches the hole that fits your
nipple best.
6 Breast shield sizes 21 mm, 24 mm, and insert size 19 mm are included in the
package.
7 Breast shield size 28 mm and insert sizes 15 mm, 17 mm, 26 mm can be
purchased separately (see 'Ordering accessories and spare parts').
8 Start pumping by using the selected size(s) and closely monitor your
comfort. After pumping, the nipple size might slightly change. If pumping
becomes uncomfortable, measure your nipple size again and switch to
another size, if needed.
Note: You might need different sizes for your left nipple and your right
nipple. Nipples may also change during your pumping journey. For example,
the nipple size may change just after giving birth, after several months of
breastfeeding or pumping, or may be different again after a second
pregnancy.
Assembling the breast pump
Warning: Be careful, when you have disinfected the breast pump
parts by boiling them, they can be very hot. To prevent burns, only
start assembling the breast pump when disinfected parts have
cooled down.