So while looking for a replacement earbuds on Amazon I saw the sale for battery replacement. I had difficulty getting the snow board and a pair of skis on one side, the binding of the snow board conflicted with the ski in the space I needed to put the ski in order to have the ability to close the clam. great for use under clothes for warmth but I tend to wear as regular leggings and top without extra clothing layer. Not so, this also is sub par quality. Actually fit better with socks on! It appears to be made in China product and doesnt appear sturdy. The higher end A1000z is said to sound just same as the A990z, but with a littler more of everything (At double the cost no less! I guess you get what you paid for! I only wear these for yoga and similar workouts. Overall, I recommend this product if you do not have a large phone, as the holder itself is a bit small (but it is stretchy).