Since my ds could stand in his cot he has been falling over and smacking his head due to the grobag. I worried one day he'd smack his front teeth so stopped using them. Since then I've been using a cover for about 4-5 months (hes 12.5 months). Now it's cold I don't know what to do. Tried grobag again the other night and same issue plus terrible night as he seemed to get twisted in it. He moves a hell of a lot at night. Any alternatives or advice on how I can keep him warm at night?