The Free RN 2018 running shoes from Nike come with a new adaptive fit upper and flexible sole for a more natural feel than ever. Predecessor: Free RN 2017 Support Type: Neutral. Cushioning: Lightweight flexible response. Surface: Road. Differential: Not provided. Circular knit upper with spandex for a hugging fit. Dynamic Fit technology integrates Flywire cables through the laces for an adaptive supportive fit. Lightly padded tongue and stretchy collar for a supportive wear. Soft fabric lining offers a great wear inside shoe. Removable foam insole. Fused synthetic throughout forefoot. Phylon foam in midsole delivers exceptional cushioning and lightweight durability. Rounded heel mimics the foot' s shape and rolls naturally with the ground. Tri-star outsole pattern provides optimum flexibility. Lightweight solid rubber under the toe and heel deliver reliable traction and lasting wear for longer miles. Imported. Measurements: Weight: 11 oz Product measurements were taken using size 12 width D - Medium.Weight of footwear is based on a single item not a pair.