The Nike LunarTrainer combines lightweight and plush cushioning with minimalist materials for a supreme ride. Engineered mesh offers a lightweight, breathable package with zones of support and breathability. Nike Flywire technology wraps the midfoot for lock down. Lightweight and responsive Lunarlon foam core interacts within a firmer Phylon™ carrier for a plush, soft, and responsive ride. Rubber lugs in the heel and toe for durability, while Phylon™ Waffle™ pistons deflect into the Lunarlon cushioning core for a soft and smooth transition. 7.6 oz.