Nike Volley Zoom Hyperspike Womens Shoes Size 8.5 Flywire 3.0 technology provides a breathable foot-to-upper fit that locks the foot down and reduces movement inside the shoe. Lightweight Phylon midsole with responsive forefoot Nike Zoom unit offers impact protection and comfort. Lateral outrigger and TPU heel counter add sturdy support. Solid rubber outsole with modified pattern gives durable on-court traction. Wt. 9.5 oz.