A simple leather loop to keep your sword at your side.
Just remember to get one on each side or your pants are going to feel oddly unbalanced in a way that can't be accounted for when bragging at the tavern bar.
Basic but excellent
These basic holders are quite great. The inside is felt lined and the outside feels great. The only thing I would say is I bought the right one thinking it was for the right side of the belt not to pull out with the right hand but luckily my partner bought the opposite one thinking the same thing so we simply swapped but that was a bit confusing. Besides that it's great.