CrossFit Kids at CrossFit Potrero Hill is for children 3 yrs to 12 yrs old. The programming is constantly varied, functional and FUN!!! Kids will be exposed to fitness that is broad, general and inclusive, so they can have a solid foundation for any activity they might be interested in later in life. CrossFit Potrero Hill offers CrossFit Kids classes for kids ages 3-5, 6-8, 9-12. With this certificate for a 12-class pack, you kid will learn the basics and have fun. http://crossfitph.com/crossfit-kids/