Works great Hows everything you need Looking forward to using this with clients. With Crocs the sizing differs dramatically with products. I knew my size and was a little hesitant to order online but Im pleased to say everything was perfect. For some reason the acai berry packets do not dissolve easily in water. I do all kinds of outdoor activities from landscaping, walking the dog, hiking the AT, volunteering at charity festivals outside, and so Im outside in all kinds of weather. Ive been using this for two years and have had no issues. I would expect early wear to the cups since it is pleather. I put it together - one person can put it together but it can be a little tricky. The type that go into your ear canal have better opportunity to seal off the noise and also give you the bass that youre looking for depending on the brand you buy.