Good (morning, afternoon, evening), 
My name is (NAME) and I am putting together a Moms and Minis Club in Durham Region to provide experiential programming for stay-at-home moms and their kids to do during the day. 
We are currently working on offering paint workshops, zumbini (mom and tot Zumba), and mommy and me yoga. As you can imagine, it can get pricey to partake in these activities, but the social and developmental benefits for the kids who participate are numerous.
In order to make this more affordable for moms, we are looking for sponsorships to ensure that these offerings are within reach for whoever might be interested. I know that (COMPANY NAME) is aligned with our values of supporting mothers and children, and was hoping that you would consider sponsoring this club to ensure that we are able to extend our offerings to mothers across the Region, no matter their circumstances.
Thank you in advance. 
Best, 