Product review (4 stars): To paraphrase the Beach Boys, "I'm picking up no vibrations..."
Works well. Front loader washer is not quieter and vibrations are not not transferred to floor when it goes into super jet speed spin cycle. The two types of rubber really work well together and appear to be of good quality. Its tricky to get these under the feet of the machine of course, but that is not a fault of the product in any way. Pricey but recommended.