Instruct: Classify a review into positive or negative sentiment.
Query: Very adhesive, not very durable or cohesive

I have used dozens of brands of pad electrodes for TENS. These are the stickiest I have encountered, staying stuck in situations others would fall off. That is, sadly, their only saving grace. The adhesive tends to pull off in small sticky gobs during removal and cleaning. The leads are held in place very poorly, ripping completely out of the pads in some instances.