Men's HEYDUDE Flint Boot Classic Boots Built for cooler days and casual adventures, this rugged boot combines everyday comfort with an outdoorsy look. The synthetic upper is paired with elastic laces and a lace keeper for an easy, secure fit. Inside, a plaid lining adds a seasonal touch, while the upper is treated with a water-repellent spray for added protection. An easy-on system and travel-ready construction make it a convenient option for wherever the day takes you.