No. HuskeeCup's materiality increases the cup's thermal retention properties in comparison to standard polymer cups and single-use paper cups, whilst its fins protect your hands from the heat of the drink by minimising the surface area your hands come into contact with!
In short, you get to enjoy hotter coffee for longer!
Please note: You should be careful drinking hot liquid, as the cups can disguise the heat. HuskeeCup is not a thermal cup and will keep your drink hot for a comparable time to ceramic or glass.