My DS (8 months next week) sleeps in sleeping bags. However, I've realised that when he wakes up (or before he drops off), he brings his knees up and chews the zips and zip pulls on his sleeping bags. I don't like him doing this as I don't know what's in the metal and paint on the zip. But he doesn't like a dummy. He just likes to chew on the zip part of his sleeping bag! So I am thinking of ditching sleeping bags. But what do people use instead? What did generations before us use? Sleeping bags are so handy, especially when, like my DS, they often do a full 180 degree turn in bed.... Does a blanket and sheet really work in such cases? Is it safe?