Stay warm and protected when the temperature drops with Callaway Thermal Mittens. The Opti-Therm™ fleece lining locks in heat for superior insulation, while the Opti-Shield™ microfiber shell creates a waterproof, wind-resistant barrier against rain, snow, and cold air. A cinch closure at the wrist seals in warmth for a secure fit, and the 100% waterproof construction ensures your hands stay dry no matter the weather.