The Lunar Lite Trainer+ running shoe features the Nike Free last that provides anatomical fit. Breathable mesh upper, padded tongue offers additional comfort. Reinforced lateral metatarsal area. Lunar Lite foam (blend of unique elastomer with modified synthetic rubber compound) is very cushioned, yet incredibly lightweight. Injected unisole carrier construction sets the Lunar Lite foam under additional tension providing responsive ride and additional stability. Geometry and placement of outsole lugs adds mechanical cushioning properties. BRS 1000™ rubber in high abrasion areas. Wt. 8.8 oz.