The case is very durable and the design is great! Cheap rack. I work in a cafe and need slip resistant shoes for safety. What that means is that I like trying a lot of things out while they are still in their infancy, and by doing so I tend to deal with products that behave a little rough or are unpolished. (I regularly have a recycle bag in my suitcase on my way back to the UK :-) The work flow is: the used pods need to be set aside. Wenn man Glück hat geht es auch günstiger. February 11th update: I still have had no issues with this product! Unless you have two quite different size feet, neither of which are larger than those of a 5 year old, DO NOT ORDER THESE SLIPPERS! This design is very clever. The max volume is way to low, superhuman hearing is a gimmick it just makes max volume higher and the microphone picks up WAY to much background noise.