When is it time to transition from cot to bed? Do you have a little escape artist at home, trying to crawl over the sides of the cot? Then it's time to change to a junior bed. It can be difficult to acknowledge that your little one suddenly isn't so little anymore. But there has to be room for the growing limbs, so junior can get a good night's sleep. The junior bed is the perfect bed for kids, who have outgrown their cot.