I got the Muscle Roll-On for Sore Muscles after leg day and it does what it promises — the menthol gives a cooling tingle that helps my calves feel less tight within a few minutes. The 10ml roller is small, so it fits in my gym bag, and there is no mess since you just roll it on. The scent is strong but fades. It is not a cure for serious soreness, just quick comfort, and I wish the bottle were bigger. Still handy for post-workout or long days on my feet.