Apple didnt make it easy to buy replacements so I looked around here until I found comfortable taking a gamble with these,. Most underwear regardless of price, tend to "creep up". Pros:1) came earlier than expected (in time for Christmas)2) is not to big, takes up a little more room compared to a treadmill3) directions were relatively easy( a few steps above putting together IKEA furniture)Cons. You dont need a lot of volume to get a lot. The comfort was better but to pay so much and only last 2 days??! Overall, the size is quite nice for the speakers I am using for. The design was very bright and noticeable just like the picture showed. )I also have some Origami brand shelves, which are also foldable & certainly more durable. Its a good case but has no adhesive so I accidentally pull it off alot. Straps strange.