APL Athletic Propulsion Labs Men's Concept 3 Black/Gray Basketball Shoe Mesh, Hotmelt, No Sew Construction Patented Load N Launch technology works in conjunction with the newly developed insole for increased comfort and an instant increase in vertical leap. Unique FloZone upper provides extreme breathability never before seen in a basketball shoe, while offering lock-down and support where you need it most. Synthetic suede overlays and molded high-density collar padding provide ankle support and heel lock-down in a plush, super-comfortable package. A  internal bootie comprised of open air mesh accommodates many foot shapes with a seamless, sock-like fit. Durable, non-slip rubber outsole uses segmented herringbone surrounded by orbital grooves to provide improved traction in every situation.