Hi Patti,
Probably too late a reply, as I think you already ordered the Evap vest.
But I have used Coolvest for several years in Arizona 100-115 deg summer days.
It works great keeping me cool. I have the Sport vest for the extra support strap.
I use just 2 packets in front & lasts for 3 hours, packets core temp 70 deg.
I then use the other 2 packets in front for another 3 hours.
I have 4 spare packets, so can keep cool all day riding F3S SE6 Spyder!!
Read the info about it on website.
The Military has used Coolvest for years in Iraq & Afganistan; even their Dogs.
http://store.coolvest.com/
Thank you for such a nice reply about my F3S TOURING Spyder.
Rode to Springfield, Mo/bought from Len at Pitbull April 8th 2015.
Sounds like a great ride to Alaska!!!
Enjoy.
Jim