Ergonomics Multifunction Control Handle has ergonomically positioned dual thumb wheels with twist grips, lift, lower and horn buttons for simplified operation of all controls with either hand. High-Speed Interlock allows the operator to maintain top travel speed without continuously pressing a button for long distance transport, increasing freedom of movement. Low-platform step height eases frequent entry and exit during floor level order-picking for reduced body fatigue. Polyurethane torsion block casters act as shock absorbers to improve operator ride comfort. Bubble-cushioned operator floor mat, padded backrest and knee pad are designed to limit body fatigue and keep the operators productive. Rubber drive tire and polyurethane load wheels provide a smoother ride and longer tire life.