When I was a kid and an air-conditioner in a middle-income home was but a dream, I recall my grandmother rolling out a "shital pati" during summer and urging us, her grandchildren, to sleep on it. Now, several decades later, I cannot say for sure if it was the "cool mat" or her power of storytelling that put us to sleep during those hot summer nights. But the smooth and silky feel of the mat remains etched in my memory.
