That's what Dakin calls it. Hitherto, it had been a pillowcase with trucks on it, a gift made by Great Grandma. Then Dakin discovered it and it became a blanket. Then today, the ultimate transformation: a leeping bag. Doesn't he look cute in it?
He insisted on staying in it for his nap, and wore it in his power chair afterwards. He is snoozing in it in bed right now.