The Powerskin Carbon-Flex VX (open back) is a high-performance swimsuit from Arena, featuring their carbon cage fabric  that is designed for short and long-distance competitive swimming. This swimsuit has a V-Flex System, this allows for optimum freedom of movement around the hips, glutes and shoulders. This V-Flex System has been designed so the seams have been moved away from the sides of the suit to form a ‘flex line’ across the hip flexors for reduced resistance during starts, turns and breaststroke kicks.