The Nike Zoom Pegasus 31 Running Shoes are the quickest and most responsive Pegasus yet. Nike have made improvements to this legendary shoe with an updated Nike Zoom Air cushioning lightweight and supportive mesh upper and a low offset designed for speed. The upper is constructed from engineered mesh with less layers to minimise weight and provide support. Targeted ventilation keeps your feet cool where it's most needed. The Nike Zoom Air unit beneath the heel provides low-profile yet incredibly responsive cushioning. It's been updated to bring the unit closer to your foot and provide improved cushioning throughout your run. The rubber crash rail on the lateral outsole provides a wider footprint to stabilise your foot throughout your foot's movement. Heal-to-toe offset is lowered by 2mm to deliver a more natural footstrike. - A.D. Midfoot saddle composed of mesh and no-sew overlays for ventilation and a secure fit No-sew overlays throughout the upper for support and a seamless interior Reflective elements under the saddle for enhanced visibility in low light Premium Cushlon foam for soft yet responsive cushioning and support Internal heel counter wraps the foot for a snug secure fit Waffle outsole with environmentally preferred rubber for durability and exceptional multi-surface traction Offset: 10mm Weight: 244 grams (women's size 5.5)