Wells Lamont Synthetic Leather Work Gloves with Blister Armor, Extra Large (7675XL) Palm: 60% nylon, 40% polyurethane. Back: 96% polyester, 4% spandex. Thumb back: 80% cotton, 20% polyester. Imported Protect your hands while youre hard at work. Synthetic leather palm is durable and machine washable. Liquid-filled membrane beneath palm patch prevents blisters and stretch fabric back ensures a flexible fit. Terry cloth thumb back makes a great brow wipe. Wells Lamont - Stubborn About Quality since 1907.