The itching under the transmitter is frustrating for DD---but she likes to have the sensor to not have to test much at school--especially during PE, recess, and dance. She also glances at it before tests, to see if she might be out of BG range. I tried the pumpwear armband sensor cover--but it slips down DD's arm and the sensor is left flopping. I did cut up one of my toddler's babylegs leg warmers and it worked well--as long as DD put the "cuff" of the cut up babyleg above the transmitter. The "cuff" helped it not to roll up or slide down off the sensor. Does anyone not use tape? What do you use? Vetwrap gave DD a burn-like rash. I was also thinking I could stop the rolling if I stuck something "grippy" to the transmitter to hold a cover/armband in place. Maybe that would stop the "rolling" and slipping? Any ideas?