I must confess I didn't see it online, just came across it in the bedding section when I went in the store - it wasn't being specially advertised but I think it's a good buy. It does a massage cycle, where it has a five minute build up time, 15 minutes on massage than gthe massage goes off for a while and then the cycle starts again. Or you can have it on just heat, heat and massage or just massage.
About six of mine have already tried it and if it wasn't for feeding time interfering I think they would still be there.