These electrodes do what they are made to do, and they are extremely long lasting.
First, the value of these electrodes are wonderful. The same set at a medical store in our hometown are over $7.00 per pack! I have tried several electrodes and these have proven to adhere well without using spray even after several uses. The only time the electrodes have been a problem is when the temperatures are over 90 degrees and I have sweat through my shirt. I personally will not use another electrode and I have tried every color. For the price these electrodes cannot be beat. Thank you.