Love that it holds the bottles at a slight downward angle (see photo). This product is fragrance-free. The soles gripped well in all surfaces while wet or dry. There is a single security knob to attach the carrier and once secure, the knob can be locked with the key that comes with the carrier. They were the right fit for a name keychain I made for a customer. I dont have many other positives because the bottom line is Ive bought like 3 pairs over the course of 4 years and I will continue to replace them. Dont hesitate, these are a great buy! They are very loud, they cut the noise of the environment and you can focus on your game. I was able to trim and clean up my guys facial hair (beard) with ease too. I was literally blown away.