Get together with your friends for outdoor fun! Ask nine friends to each bring a recycled, light-colored shirt. With Crayola® Fabric Markers, draw five Xs and five Os on the shirts. Crayola® Fabric Markers stain clothing and surfaces, CLOSE ADULT SUPERVISION IS REQUIRED. Before you put on the shirts, designs must be ironed by an adult. Set iron to cotton setting and iron on the reverse side using a back and forth motion for 4 minutes. You could also place the shirts in the dryer for 30 minutes on the hottest setting.