My 5 and half month old son is an extremely alert and active little boy. Napping at home isn't a problem as he loves his cotbed and his room is always nice and dark for him to wind down and fall asleep in. However, I was stuck indoors until after his lunchtime nap every day as he simply would not sleep in his carseat or pushchair. If I ever did take hime out before his lunchtime nap, he would end up being overtired by bedtime as he could not wind down and get to sleep. He is an extremely curious and alert little chappie! Every parent will know that an overtired baby is not easy to handle and can often get very upset indeed. After purchasing this product, and using it for only the first time today, I realised my days of being stuck indoors until 3pm are over...hurrah! After attaching the snoozeshade to my son's maxi cosi seat at his usual nap time while we were out, literally 3 minutes later, he was fast asleep!!! Amazing result considering I couldn't get him to sleep in his car seat unless I drove him around for at least an hour if not more! Seriously, if you want to keep your child content and happy whilst out and about by not spoiling the nap routine, just buy this...right now! Can't recommend it enough!