If you really want to go all the way, you can either DIY or buy one of the existing ice backpacks. These come with a vest with water tubes to cool down your ski

If you really want to go all the way, you can either DIY or buy one of the existing ice backpacks. These come with a vest with water tubes to cool down your skin and blood. The ice supply lasts a few hours. Of course, it means there will be more to worry about contaminating when doffing.