Attenuates shock during impact and toe-off phases, and allows movement in multiple planes as the foot transitions through the gait cycle. The use of seamless materials reduces the potential for irritation and friction caused by traditional stitches and seams. Trusstic System Technology integrates Guidance Line construction for enhanced gait efficiency while providing midfoot structural integrity. Guidance Line Midsole Technology - Vertical flex groove decouples the tooling along the line of progression for enhanced gait efficiency. Ortholite Lasting This lasting material features plush underfoot comfort while providing excellent moisture management and a high level of breathability (Ortholite is a registered trademark of ATP Manufacturing LLC. ). Colour: black