These activity trackers from McDonald's can cause irritation, blisters and even skin burns, so have been recalled. (CPSC)McDonald's recalls 29 million activity wristbands in the U.S. and 3.6 million in Canada because they are at risk of irritating or burning a wearer's skin. The quick service restaurant chain had been including the "step-it" activity trackers in Happy Meals as part of a child fitness promotion between August 9 and 17th this year. The Activity Counter comes in translucent plastic orange, blue or green, and features a digital screen that tracks a child's steps or other movement. The Light-Up Band comes in translucent plastic red, purple, or orange, and blinks light with the child's movement.

Source: CBC News August 23, 2016 12:45 UTC