Our gym teacher recently started using a wireless mic but had a lavalier mic in hand. After speaking to a few local spin instructors I chose this one for him. He was very happy with the sound and comfort and especially happy that he now has his hands free. For a month of daily use, there were no problems. Rotation teachers told me that after a few months they had problems with the mics failing due to the excessive sweating that the mics had to endure. This shouldn't be a problem for our purposes, but I'll be sure to update if it turns out to be a problem.
Audio-Technica AT2020USB+ Condenser Microphone Bundle with ποΈ Knox Gear Shock Mount, Boom Arm, and Pop Filter
22 Review
17 Review
Enhanced Performance: Audio-Technica AT2020USB+ Cardioid Condenser USB Microphone (Renewed)
19 Review
Professional USB Microphone with Zero Latency Monitoring - MAONO AU-PM422: 192KHZ/24BIT Cardioid Condenser Mic with Touch Mute Button and Mic Gain Knob for Recording, Podcasting, Gaming, YouTube
19 Review