It's Mill Creek's 125. I haven't got a clue as to how it performs as a candle in a hot truck but it seems to do okay as plain ol' wax when it's shipped to me (although that's only a 2-3 day shipping time, but it does arrive in late afternoon after being on the truck all day). I really hesitate to suspend shipping (doesn't seem like a good business practice overall). Timing a Monday-Wednesday ship is still a possibility at this point as I'm in the middle of the country and most US destinations are 2-3 business days out from me. I looked into gel packs but man, the cost!! Yipes. Not to mention that they only last about 20 hours tops without the accompanying styrofoam cooler. Too bad there aren't climate controlled point to point shippers out there.