This is great i used it on a cob i had with awefull sweet itch a few years ago and he only got a few patches each year when he was wearing opposed to his whole mane and tail being destroyed if he didnt have it on.
I've got a Pessoa sweet itch hoody (think got it from Robinsons) - brill!
I tried the Pagony which is the cheapie version of the Boett but not impressed with the quality plus somehow horse got all tangled up with the elastic strap bit of it and wouldn't let me put it on him again.
For sweet itch you need the hoody ones which cover the poll area, plus mine has to wear a grazing mask coz his ears get in an awful state else.