This item sold on February 18, 2013.
They are 100% machine washable as each rattle is fully enclosed. The inside has stainless steel bearings for a nice clear rattle sound. You can sew a fleece circle around the rattle if you want a more muffled sound.
Measures 1-1/2" diameter x 7/16" high
Feel free to convo me if you want more than just 5.