The Midtop Driving Shoe from Simpson is fully SFI 3.3/5 certified. These driving shoes are simplistically designed for comfort and functionality. They feature satin suede reinforcements at the heel and toe, as well as reinforcements of the laces. The sole is constructed from super non-slip PU material for maximum control over where your foot goes and when. The achilles relief cut at the rear of the shoe provides maximum flexibility in the most extreme conditions.