New Balance FuelCell Summit Unknown SG Women's Trail Running Shoes Made for fearless runners brave enough to take on off-road terrain. The FuelCell Summit Unknown from New Balance features a Rock Stop Plate outsole to help protect feet on uneven ground, with Hydrohesion technology for superior grip. Mesh Upper Utilising a bootie construction for the upper of the Summit Unknown SG Trail Shoes, the shoes hug your foot comfortably for a snug, supportive fit. Additionally, the mesh works alongside this to keep feet feeling fresh and cool. Perforations in the synthetic mesh increase airflow to create a better, healthier environment for your feet to thrive. The Toe Protect rubber compound wraps the toes to reinforce the shoe's trail-worthy state, increasing its durability and defending feet against roots, rocks and other general hazards. A gusseted tongue helps to keep rocks, dirt and debris out of the shoes, therefore, keeping your feet comfortable. Finally, an adjust