Always a keens fan, this is the first pair we purchased for our 19 month old son to use during an active water season in sunny FL. You get vibration when the bass kicks in, is which Im always looking for. I mean massive. since they banned the use of ear buds and or headphones where I work I one upped management. Love Keens! I really wanted to like it too. If you have a problem like me, you are screwed. The packing is great What I dont like is the slippery tread. It has a ball end to make the angle.