I bought this product because all the picks that I had were made of flexible cheap plastic. So, when I tried to play with them, the sound was very muffled because they would bend every single time that I played a note. In terms of thickness, I was a little bit consern because I didn't knew if "heavy picks" would break the strings of my guitar, but I was surprised of the sound that came out of the guitar, very clean and until today no string was broken. In terms of durability, if you are always playing guitar, it's true that they will run out very quickly, but they are very durable. Highly recommendable.
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