Nike SB Zoom Blazer Low AC XT white/white-black shoes. The Blazer is back with an all-new laceless solution. 3-straps across the midfoot offer adjustable lockdown. Its extra-tough, rubber toe cap delivers durable, consistent flick for all-day skating. Zoom Air unit in the sockliner provides low-profile cushioning. 3-strap design offers a secure fit and easy on and off. Tonal toe cap for consistent flick and durability. Traditional vulcanized construction fuses the outsole to the upper for a streamlined look and a low-to-the-ground fit. The interior of the rubber outsole is cored out in a honeycomb pattern for weight reduction and flexibility. AC stands for autoclave construction. XT stands for extra tough, a nod to the extra rubber on the toe tip for optimized durability.