Ultimate Ninjas is hosting an Open Gym Giveback events for Mitchell Elementary School! Have fun at Ultimate Ninjas and support your school at the same time! When: Monday 11/11/19; 1:00 PM – 3:00 PMWhere: Ultimate Ninjas ChicagoCost: $20 per ticketAges: 5 & up For every ticket sold, one-third of the proceeds will be donated back to Mitchell Elementary School.