Yesterday I was reading the fine print (yes, I was using a magnifying glass) on the bottom of a Lucky Craft lure package and noted the following: "The lure may partially expand and burst in an ambient temperature of 40°C, so please store it in a location of relatively low temperatures." Other Lucky Craft packages had the same warning.
The conversion from 40°C to °F gives us 104°F, which is not all that hot. We easily exceed that temperature in the cab of a vehicle on a sunny day.
I don't have much experience with these lures, but it appears that a person could lose a lot of money if he was not careful. A lure that was running well could become distorted and ruined with exposure to high temperatures if the warning is correct.
More Tennessee fishing...