How do I wash my sweat guard? Philip Cowles March 30, 2018 17:06 Follow Handwash with mild detergent and hang dry. Related articles Do I need this stick to do firmware updates? My smart trainer (Hammer or Magnus) is not calibrating in Zwift. What should I do? Where can I find replacement parts for my trainer? Does the CycleOps trainer tire fit 29er wheels? If my bike has a thru-axle, can I still use your trainers? Comments 0 comments Please sign in to leave a comment.