The Crank Brothers Stamp Boa is a seriously nice flat pedal shoe, featuring a Boa retention system paired with a strap up top, some silicone heel dots in the back of the shoe, your foot is not sliding out of these. The tread pattern is optimized for both pedal traction and traction while walking. With the Boa fit system, a well thought out tread pattern, and good looks the Stamp Boa is the ultimate flat pedal shoe.