Wet it and it acts like a cooling wrap, says a member. They are available all over the place and cost less than $20.
Here's a link to a $12 one one Amazon: https://www.amazon.com/Premium-Shema.../dp/B00X31L2W8
Here's a link to a $12 one one Amazon: https://www.amazon.com/Premium-Shema.../dp/B00X31L2W8