That is truly the hardest thing to do. So when I found them on Amazon and in my size in the color (black) I wanted I purchased them . Now you can hear and know exactly where your enemies are as if you were in the game yourself being able to use your own natural hearing ability. Great Value For Price. The problem I was presenting was I perspire a lot when circuit training or running they get loose and slip out. Not worth the price and quality. Es el primer par de cross que me compro . Packaged nicely. I am not impressed with this product. We finally decided on one that was over $50 and the item was crooked upon arrival.