A Tokar is a long, loose shapeless sheet that is worn in Ghiscari cities by the wealthy.
It must be wound around hips and under an arm and over a shoulder to keep it on. It is wrapped this way to carefully display the dangling fringes which are usually adorned with some decoration.
If wound too loose, the tokar might unravel and fall off. If it is wound too tight, it might tangle and trip the wearer. Even if wound properly the wearer must hold the tokar in place with their left hand and walking requires small steps and great balance to prevent tripping and falling.
A Dance with Dragons
Daenerys wanted to ban the tokar when she took Meereen but her advisors convinced her otherwise. Galazza Galare warned her that the Mother of Dragons must don the tokar or be forever hated. The Green Grace explained that dressed in a foreign outfit she would forever remain a stranger amongst the Meereeneese - a barbarian conqueror. Brown Ben Plumm put it more succinctly to Dany:
Man wants to be the king o' the rabbits, he best wear a pair o' floppy ears.
The tokar was a master's garment, a sign of wealth and power.
- Tyrion Lannister's thoughts on the auction block