ROOM BABY SLEEPING BAG WHAT TO WEAR TEMPERATURE UNDERNEATH? 24°C + ET PLUS Lightweight Short-sleeved bodysuits baby sleeping bag or just a nappy TOG 0,5-1 ,5 FROM 20°C TO 22°C + + ( 68°F TO 71.6°F ) Quilted Long-sleeved bodysuits baby sleeping bag and lightweight sleepsuits TOG 1,5-2 FROM 16°C TO 18°C + + (60.8°F TO 64.4°F) Thick, quilted Long-sleeved bodysuits baby sleeping bag and winter sleepsuits TOG 2,5-3 ET + How to dress baby for bedtime? The big question is: how thick should your baby sleeping bag be? It depends on the temperature of the room. For newborns (summer babies, included!), we want them to be warm and cosy. For all the rest, consult our helpful table. (Note: TOG refers to ‘Thermal Overall Grade’).