Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Great product

These inserts have made it so I can play tennis again without being practically crippled the next morning, unable to put any pressure on my heel. If you have plantar fasciitis, get a pair of these. The cushioning is wonderful, though you should probably also get shoe inserts with arch support (I recommend Sole brand). Also, you can Google "taping plantar fasciitis" to read how to tape your foot and heel before engaging in athletic activities. The combination of these three has made an *enormous* difference for me. I didn't have the problem other reviewers had regarding the inserts sliding up.