ECCO Women's Biom Hybrid Golf Shoes, Yak leather, Gray leather, Size 40 Features: Uppers crafted from combination of durable ECCO Yak leather and premium textiles ECCO Hydromax® treatment makes uppers highly water-repellent to keep your feet dry in all conditions BIOM Natural Motion technology keeps you closer to the ground with an anatomical shape for the best fit E-DTS spikeless traction outsole features 100 TPU traction bars and 800 traction angles for maximum grip FLUIDFORM™ Technology creates lightweight, ergonomically advanced soles for superior comfort and flexibility Removable comfort fiber insole cushions every step and increases versatility