Personally, I think the effect is good. I have practiced martial arts before, so my calf muscles are thick and ugly. In my situation, I want to stovepipe, and I don't exercise, and I don't exercise. Later, I searched the Internet for stovepipe products, saying that 2B was better. I bought a set of three in Sasha and used two and a half. The circumference of my calf is about 2 cm smaller, which is not a particularly great achievement, but it is already very useful because it is a muscle. The landlord can try.