Engineering Evaluation of a Breast Pump Device

Inclusion Criteria: * History of good health * Currently lactating and planning to continue breastfeeding for the next 3 to 4 months * Currently using a commercial electric breast pump at least several times a week * Sufficient milk supply for one missed infant feeding per device testing visit * Willing to attend five device testing visits over 3 to 4 months * Willing to be video recorded during device testing * Willing to discard milk collected during testing Exclusion Criteria: * No active breast or nipple injury, breast inflammation or infection, or nipple piercing * No prior history of breast implant, reduction or reconstruction surgery * Not currently pregnant