DO NOT BUY THIS PRODUCT.  IT IS UNSAFE
Used this for a while, the materials are cheap.  1st noticed the red logo on the warmer started smearing off, now just looks like a red blotch.  Then one of the warmer became scalding hot.  Tried changing out the fuse and it didn't do anything.  Contacted the manufacturer, they warranty for 1 year.  This Product went bad literally 1 year and 10 days after the purchase and they refused to return or replace.  Poor customer service, they don't stand behind their products.  If you like burning skin this is the product for you!
Rating: 1 stars