My DS age 7 had 2 dry pullups this week, (usually 2 a year!)I am preparing for a pullup free trial! DS cannot cope with sheets and blankets so the duvet always gets wet! Last pullup free time was summer hols (1 dry night in 6/52), when thin duvets (i have 3 + 2 small sized) were adiquate. Now is winter and warm singles wont fit in my washer. I have 1 warm cot-bed sized which fits in washer but slightly small for DS!. I have tried a waterproof cover (too heavy and sweaty) and the best method so far is using a thin duvet next to child and a warmer one on top. Anyone got any ideas? DS has sensative skin and likes his cosy cotton covers.