Tri Tronics G2/G3 Classic 70 G3 EXP Durable Field & Pro Holsters This holster is made of durable nylon Cordura. Very convenient with a hand loop and adjustable strap. Works with any Tri-Tronics G2/G3 transmitter. Also compatible with the Garmin Pro Series transmitters. Can be worn on your belt, over your shoulder, across your chest, or simply hold it in your hand. Great protection for your Tri-Tronics or Garmin transmitter. This holster also aids in assuring that you don't lose your transmitter in the field.