Evolution Trillium Series Walker. The Evolution Trillium Series Walker is one of the most comfortable, safe, and easy to use walkers on the market. The Trillium offers a removable quilted padded seat cushion and wide back strap that’s as stylish as it is comfortable. With an all-new cable-free braking system, the Trillium provides both easy maintenance and effortless handle height adjustment. Choose from three walker models in the Evolution Trillium series, offering sizes to suit anyone: Trillium Mini, Trillium Regular, and Trillium Tall. The Trillium also includes a foldable and removable collapsible basket, lightweight wheels, a contoured backrest, and many colours to choose from!