NeoSport Mens ION Series Triathlon Racing Suit. The ION Series triathlon racing suits are designed with a specific focus in mind, to keep triathlete's comfortable and moving fast throughout a race. The ION suits are worn under your triathlon wetsuit to drastically help minimize transition times by already having a garment on for cycling and running. And the ION suits are as good out of the water as they are in; constructed from a low drag skin-like compression material which dries fast, has superb breathability and moisture wicking properties. Another important feature is the built in synthetic chamois which dries fast, allows for comfort and is low profile during the run. The ION suits are perfect for any level of triathlete.