Columbia Trans Alps II Trail Running Shoe Synthetic Imported Seamless Construction - Offers a sleek and soft package that minimises chafing. Mesh Upper - Increases ventilation to the foot. Mudguard - Enhances durability. No-Sew Overlays - Shields the foot from sharp rocks or roots that could potentially cause damage. Rubber Toe and Heel Caps - Enhances durability of the midfoot and heels to reduce scuffing.