Jack & Jones EALING PU Mens Trainers in White/Green. Upper Material: Polyurethane, Lining Material: Mesh, Sole Material: TPR. Features include comfort and breathability, with a lace-up closure. The toe shape is round, and the shoe width is regular. Heel height is low (2.5-4.9cm), and the shoe shaft height is low top. These are casual trainers and are not gift-boxed. Product Code: 12257992-WHT. Polyurethane (PU) is a durable, synthetic alternative to leather.