The ArmourVent mesh upper delivers true breathability in a lightweight, stretchy, durable, fast drying fabric. The seamless heel cup with silicone grip allows for a locked in, anatomical fit. The smooth, ultrasonic welded seams with Bemis tape allows for next to skin support and comfort. The full length Micro G form turns cushioned landings into explosive take-offs. There is a curve at the midfoot for extra support and stability. The full length 4D Foam embedded sock liner for added cushioning and moisture wicking capabilities paired with seamless comfort.