The 1í_í_Œ Oval Brush is primarily used for making evergreen trees and foothills and for highlighting trees and bushes. The Bob Ross landscape brushes are special brushes made from a blend of natural and synthetic bristles and shaped according to Bob's very precise specifications for the Bob Ross Wet-on-Wet TechniqueŒëŒå. Remember, ordinary brushes are not the same and can't create the same beautiful effects these will.