In "Farsi" (Persian language), Jol means blanket and ‘asb’ is the word for horse. The same word points to the modest cloak of beggars and dervishes.
This is used to protect the animal during cold winter nights or as a blanket after galloping.
A Jol consists of a rectangular textile (is placed on the animal's back) with, if necessary, two narrow arms (to be tied together on the chest).
Mountain nomads make the Jol with a felt lining as additional protection against the cold.
It is notable that the Jol from north-eastern Iran are much larger in size than those from western Iran.
This must be related to the physiognomy of the Gorgan horses. This breed is more robustly built, and the horses have a shorter torso.

A variation on the Jol is the Q'ashieh (or Zinpush) a wider blanket that is placed on the saddle when the rider sets foot on the ground.
It is a symbolic way of saving the image of a horse without a rider (widely considered a bleak omen). It is mainly used during ceremonies by front-riders accompanied by the Q'ashieh dari, a servant who carries the blanket and covers the horse.
The size of the Q'ashieh is also much larger than that of the Jol. The finest examples were made in the city of Rasjd, a city that achieved fame thanks to a particularly fine needlework of silk thread on thin felt.

There is a wide range of ornaments in all kinds of sizes and for many different purposes, functional or purely decorative.