Nike Free Run Hot Pink Running Sneakers Shoes Size youth / kids / big girls 4.5 which is like a women’s 5.5 or 6 The Nike Free 5.0 Girls' Running Shoe features a flexible outsole and a mesh upper with Flywire technology for lightweight, breathable comfort and freedom to move wherever you go. Hexagonal flex grooves are hot-knife cut into the outsole and wrap around the sidewall, allowing the foot to move more naturally in every direction. The woven mesh upper provides lightweight ventilation to help keep feet cool. Flywire in the midfoot offers durability without added weight and an adaptive, supportive fit that moves with you. The rounded heel mimics the shape of your foot, rolling with the ground to promote natural movement and extended range of motion. GUC with some signs of wear