Horse riding equipment?????????

[horse_milly_xx]

Hi, in the latest issue of horsewyse magazine, there was an add for something called a longden grip. its a handle that connects to your saddle if you have a naughty horse, or are a young rider. i think it would be good for riding my youngest horse as shes a little unpredictable
HAVE you heard of this or can reccomend something like it?
if so where cani buy it?