Waterproof nylon upper with seam-sealed waterproof construction. Please note: Laces are not waterproof. These Skechers 232229/GYNV FLEX ADVANTAGE 4.0 Mens Mesh Trainers in Grey/Navy feature a mesh and PU upper, fabric lining, and a rubber sole. They have a lace-up closure, offering comfort and breathability. The round toe shape and regular shoe width provide a comfortable fit. The item weight is 0.45 KG, and the heel height is flat (under 2.5cm). These are fitness trainers, and a key feature is that they are machine washable. They are not gift boxed. Product Code: 232229/GYNV.