According to the data sheet, the size of these dryers is certainly the main difference. The UV LiteDry Sport is suitable for shoe sizes 40 and up, the Medic for shoe sizes 35 and up. The "illumination" is certainly better with the Sport, as it is somewhat longer, when it comes to adult sizes. The shape of shoe trees holds the dryer well in the shoe. Wouldn't want to miss the part anymore, already have 2 of them. Highly recommended, especially for sports shoes that are nice and dry the next day!

I don't know the difference to the UV-LiteDry Medic either. The UV-LiteDry Sport is my first and only shoe dryer.