Early on we dressed warmly at night and swaddled in pure cotton wraps, and on really cold nights we would use all cotton blankets to tuck them in over the top. When they got a bit older then slept in sleeping bags so we were sure they were warm all night long and would cover them in blankets if needed (after 6 mths or so) Most quilts that they sell in packs with pillow slips etc. are not SIDS safe - might be worth popping on their site to see what the recommendations are for babies. xox