The New York Milk Bank has some amazing heroes working on their side. 

A female biker club called Siren's Women's Motorcycle Club of New York City will deliver milk to mamas in the city who need it for their babies. 

The club has volunteered to take the job because the milk can be delivered much quicker on a motorcycle than a car. 

"I always see these motorcyclists weaving in and out of traffic while we're stuck, and I thought, what if milk has to get to a hospital right away?" said Julie Bouchet-Horwitz, the milk bank's executive director, "Maybe we should use a motorcycle rider to bring the milk in and out of Manhattan." 

These ladies are doing a great service!