As many of us know, lactating is natural body function. However, that doesn’t mean it’s easy — especially for working moms on the go.

In an effort to alleviate some of the logistical complications associated with lactating — and perhaps even to help attract and retain female employees — IBM will begin offering a breast milk delivery service starting in September for employees. The program will allow new mothers traveling on business to ship their breast milk back to their homes free of cost. (The offer doesn’t extend to employees working in IBM’s offices.)

While shipping breast milk in temperature-controlled packaging isn’t new, it is rare for an employer to provide this type of benefit to its employees. Federal law only requires employers provide a private space for women to pump, and a reasonable break time to do so.

“We’re going to experiment with this and see how many women are interested,” Barbara Brickmeier, vice president of benefits at IBM, told Fortune. “As long as it appeals to a segment of our population and they feel that they can better balance their work and home, we will continue it.”

The breast-milk delivery perk fits with a new trend of tech companies expanding benefits to attract and retain female employees. In October, for instance, Apple and Facebook announced they will cover the costs for female workers who are freezing their eggs.

I believe this program will make IBM a much friendlier place for working moms. Like many perks, it’s a small and relatively inexpensive gesture that could go a long way for the people it serves. I wonder if other companies will follow suit?