When babies are born prematurely, their mothers are advised to pump breast milk as quickly as possible in order to lower the risk of disease or infection in their newborn. Many women aren’t able to pump right away, so donation-based breast milk banks are crucial — new moms who produce more milk than their little ones need can donate their extra milk, and the banks deliver it to area hospitals.

The speediness of delivery is crucial — so Julie Bouchet-Horwitz, executive director of New York Milk Bank, got creative and sought the help of an all-female biker club in the city.

Unsurprisingly, the partnership has been a tremendous success. “Boy, these are badass women, and it just seemed like such a great idea to be able to employ their services to help us,” Bouchet-Horwitz said.