The ECCO® Men’s S-Three Golf Shoe. Design and Performance Yak leather upper is lightweight, breathable, and durable Hydromax treatment for water-resistant that provides protection from the elements Fluidform technology features ergonomically advanced soles E-DTS traction system consist of approximately 100 TPU traction bars and 800 traction angles providing tremendous traction and stability Ortholite® Performance Insoles wick away moisture and provide superior cushioning for underfoot comfort Washable removeable in lay sole