Introducing the Lansinoh? Affinity? Double Electric Breast Pump – The pump that’s easy to use, kind on your wallet and gentle on your breasts. Featuring our ComfortFit? Breast Flanges for a soft, secure fit and our Custom Expression? Technology for maximum milk flow, the Affinity is one of the most advanced and affordable breast pumps available, brought to you by the #1 brand in breastfeeding.