This is the alternate name for the family of dark colored Nalgene indestructable bottles. It is of the family of Sting, but a great ancestor of he as well. Sting is of darker tint, much of the contrary to Hrothgar's greenish tone, of motor oil brilliance.

Hrothgar is also the king of the Swedes in a popular but understudied fantasy novel based on the journey of Baowolf.
"o' please lead me to my dearest Hrothgar, where i find peace, solitude, and a quench for my ungodly thirst."
by George skiwhiz April 28, 2005