Here's another product that I've always liked.
AMP Research > Invent > Power Step 
Body mechanics and ergonomic research reveal that most truck and SUV step boards are mounted too high and too close to the vehicle to provide a natural step assist.
AMP engineers studied people of various heights, weights and ages to determine optimum step heights and extension for vehicle step assists.
With its low step height and outward extension, Power Step equipped pickups and SUV?s are easy to live with every day by everyone in the family.