Description of Merrell Overdrive II Trail Running Shoes - Women's The trail runner that brings serious swift to changeable terrain has had a technical makeover and a gender-specific one at that. Its lower-profile upper has a trail-balanced last designed specifically for women, including Q-Form® structural alignment for an efficient stride. Other fast femme forward features include proprietary Merrell Air Cushion midsole with Q-Form® stride alignment for women that abets proprietary Merrell Trailspring™ visible tubular support and alignment system. With the on-demand engagement of TPU trail studs, the Vibram® Ultra-Traction™ Dual Density sole has been modified for women. Features: Merrell Women Specific Trail Balanced Last Slip Lasted Construction with EVA Insole Airmesh Upper with Synthetic Leather Trim Mesh Lining Treated with Aegis™ Antimicrobial Technology Injection TPU Heel Counter Support Arms 360° Reflective Trim Kevlar Lace and TPU Molded Lace Lock System Heel Securing Top Eyelet System Bellows Tongue with Lace Keeper Flap Forefoot Protection Design with Gaiter Hook Ventilation and Drainage System in Forefoot Anatomical Ventilated Footbed with Etc.® Anti-friction Socklining Lining Treated with Aegis™ Antimicrobial Technology Q-Form® Triple Density Molded EVA Footframe Trailspring™ Structural Support, Alignment and Cushioning System Gaiter Strap Channel at Arch Bridge Merrell Air Cushion Midsole Multi-surface, High Density Studs in Outsole Forefoot Vibram® Womens Specific Ultra-Traction™ Dual Density/TC-5+ Rubber Weight: 1 lb. 3 ozs.