"A Gaston (pronounced gas-tone), named for the stylish French climber Gaston Rebuffat, is a handhold similar to a sidepull. Like a sidepull, a Gaston is a hold oriented either vertically or diagonally and is usually in front of your torso or face. To use a Gaston, grab the hold with your fingers and palm facing into the rock and your thumb pointing downward." Stewart Green
With large-type labeling, the "GASTON L" and "GASTON R" holds inform the climber of the hold type and educate them in a natural, hands-on manner. It's ideal for climbing classes, DIY walls, and other applications.