cross-trainer

[ kraws-trey-ner, kros- ]
/ ˈkrɔsˌtreɪ nər, ˈkrɒs- /

noun

a type of athletic shoe designed to be used in more than one type of activity.
an athlete, worker, etc., who cross-trains.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019