ASHLAND, Ohio, March 13, 2018 (SEND2PRESS NEWSWIRE) — Hedstrom Fitness is pleased to announce the launch of their newest product in the Hydro-Interia(R) Training line, the Surge(R) Riptide. This specialized training tool utilizes water to create an unstable and unpredictable resistance, allowing the muscles to be challenged no matter what the exercise.