OK all my horses wear 4 shoes each but.....I bought the cavallos years ago to use for thrown shoes or loose shoes and they were pretty good at keeping the shoe on or the hoof protected for a day or so till farrier could come by and reset the shoe(s). I subsequently gave them away to another Cother when I got my horses hooves back in shape to keep their shoes on.
A good product, but not a reason to give up those nails I have the farrier stab their hooves with every 6 weeks.
Stupid advertising. Good product. I have used them quite a bit including galloping sets on rock logging roads (I always booted with open front eskadrons). They worked WAY better than easy boots, and I didn't need shoes on this very good footed horse for her arena work, so they served a purpose quite well.