ECO Master C3704L PPU Water-Based Polyurethane Coated &ldquo;Outperforms Nitrile&rdquo; Work Gloves, Large, Blue Knit with Black Coating Textured palm coating made of water-based PPU polymer polyurethane is breathable, tough and flexible Durable PPU coating outperforms standard polyurethane coatings 4:1 Compares to "sandy finish" nitrile coatings Comfortable, hand-hugging 15-gauge polyester and spandex seamless knit liner 100% free of harmful DMF solvent (Dimethylformamide) present in standard polyurethane; guaranteed free of all harmful substances, toxins and irritants FDA approved for food handling Silicone-free so they leave no fingerprints; ideal for fine assembly work