Product review (4 stars): Expensive but worth it
I think these are a bit expensive for the materials involved.  But the price is worth it.  We have front load washer on main floor and it was driving me nuts.  It was our first front load washer and I was sure it was defective until I searched online.  I still can't believe that this is an acceptable product but I guess the wife likes it enough.  Anyway, typical "walking" and shaking problems.  The house was built new in 2009 and I could feel the floors shaking 50 ft away, even tore up the new linoleum.  I was afraid that it was going to cause structural damage!  Anyway, these Silent Feet stopped the "walking" completely and greatly reduced the shaking.  Washer is still loud, but at least it isn't shaking the house apart.  Would recommend as they've made a very significant improvement.