Sackless

The first act consisted of dancing, capering, and tumbling, by about twenty men, enveloped in sacks […] At length, at a given signal by the manager, the whole troop of actors rushed to the spot; they were then sackless, but their features were effectually concealed by masks reaching to the bosom.

[…] And where that sackless knight lies slain, […] The candles will burn bright.

[…] and how Thorir of Garth would not that Grettir should be made sackless.