A nipple stimulation unit

A nipple stimulation unit for promoting milk expression, comprising:

• a nipple contacting arrangement for contacting a nipple, characterized in that the nipple contacting arrangement comprising a set of one or more flexible arms each having a distal end which is configured, in use, to be directed towards the nipple such that the nipple contacting arrangement can make contact with a range of nipple sizes;
• and
• a vibration system comprising a set of one or more vibration elements, with a respective vibration element mounted along each of the flexible arms for delivering vibration to the distal end of the flexible arm.