Just tossing it out there, but if you already bought the collar you are absolutely going to need this, and a freezer, especially if you work anywhere hot. I'm from Indiana, summers are so humid you practically need gills to breathe. You can break a sweat on the way out to the mailbox on a 75 degree day if it's humid enough. One strip lasts about 30-45 minutes before it's bath water, so it's nice having a dozen refills frozen ready to go. I can work some really inhospitable environments tho thanks to this, 5/5 would recommend.
Love these for the neck wrap. Helps keep my body temperature in check