Waterproof nylon upper. Seam-sealed waterproof construction. Laces are not waterproof. Stay active in flexible lightweight comfort with Skechers Flex Advantage 4.0 - Providence. This sporty lace-up features a mesh and synthetic upper with a Skechers Air-Cooled Memory Foam® cushioned insole. Skechers Men's Flex Advantage 4.0 - Providence Sneaker in Black, Size 12 | Textile/Synthetic, Vegan, Machine Washable. Stay active in flexible lightweight comfort with Skechers Flex Advantage 4.0 - Providence. This sporty lace-up features a mesh and synthetic upper with a Skechers Air-Cooled Memory Foam® cushioned insole.