Because I sleep in a sleeping bag.
Thermal properties : Comfort temp 5 ° C, 0 ° C limit
It’s winter in Mizoram, a small state in the North East corner of India. It doesn’t snow though there are always reports of frost in some places but it’s pretty cold with temperatures at the lower single digit numbers. And lots of wind chill.
My friend brought me a Quechue S5 Ultralight Sleeping Bag from Decathlon, Bangalore. It’s for my on going trip around Mizoram but I am already using it. At home and it’s pretty warm.