Medela Harmony Manual Breast Pump is designed for breastfeeding mothers most of the time. It has a sleek design and is comfortable to wear. Hand pump assembly is intuitive and has an ergonomic handle that rotates. With 2-Phase Expression technology, it simulates the baby's natural sucking behavior on the mother's breast. It does not require electricity or batteries to operate and is very quiet. Great for taking on the go or as a complement to the usual electric puller.