Instruct: Classify the given Amazon review as either positive or negative.
Query: Great for achilles tendon pain!

These are amazing! After a year of heel pain, I finally went to a podiatrist who explained that I had mild achilles tendonitis. I have high arches, and apparently walking a lot in flat shoes puts additional strain on the achilles. He said that the best solution was to raise and cusion my heel, and recommended Tuli's heel cups. I was skeptical because I had tried $300 custom orthotics with no success, and these were so simple and inexpensive. However, I am happy to say that I am now able to walk for an hour without any pain! The only issue I had with these at first is that they do raise your foot and push it forward in your shoe. I had to go up a half size in my sneakers and wear thicker socks so my foot wouldn't move around and rub in the shoe.