HotGuard™ Autoclave Safety Gloves HotGuard™ Autoclave Gloves are made of extra-thick cowhide leather for superior personal protection against hot glass and metal. A heat resistant cotton lining ensures the gloves are soft and comfortable to the touch, even during prolonged usage. Produced in a universal one size fits all design, HotGuard Gloves are 14 inches in length to protect not only hands, but also wrists and forearms. • Heat Resistant to 260°C (500°F) • Universal, one size fits all • 14 inch length provides wrist and forearm protection • 3 layer design offers superior heat resistance