The Glideride® 3 Shoe Is Designed To Help You Conserve More Energy, So You Can Log More Miles During Your Distance Training. A Key Focus For This Design Was To Make This Trainer Smoother And More Comfortable. Softer And More Breathable, This Shoe Features A Redesigned Engineered Mesh Upper. This Material Comfortably Wraps Your Foot And Increases Airflow To Keep Your Feet Cool. We Added Ff Blast Plus™ Cushioning To The Midsole To Create A Softer Touchdown At Footstrike. It Keeps The Shoe Lightweight While Adding A More Responsive Rebound At Toe-Off. Guidesole® Technology Reduces Ankle Flexion And Lightens The Load Placed On Your Foot. Along With Its Curved Sole Design, This Shoe Helps You Roll Through Your Training With Less Effort.