Material: high quality natural rubber Weight: 279g each glove Thickness: 1.5mm Length: 14.2 inch Width: 5.1 inch Wrist, 7.1 inch Cuff The dimension is fit for most hand size. The product is suitable for lineman work, electrical contractor and field service work, high-voltage machine operations, and other industrial applications. We use only the finest dielectric natural rubber, offering superior dielectric properties, increased durability, flexibility and comfort at the best value. The material is non-conductive and provides better elasticity than nitrile, chloroprene, or vinyl, and better puncture resistance than vinyl. The glove has a contoured shape to help reduce hand fatigue and chafing, and a smooth finish for comfort and to resist wear. The gloves are tested under 20KV, and the leakage current is not more than 0.9mA per kilo volt . However, the voltage should not exceed 10KV during actual live operation. Tips: 1, if the gloves are damaged, please do not use. 2, to ensure safety, a preventive test should be performed every 6 months using. 3, when using, your sleeve should be put into the glove to prevent accidents. 4, when stored, keep away from heat, and avoid direct sunlight. Please note: In order to ensure safety under high voltage, the gloves are thick and heavy, not light and dexterous. Package include: 1 pair insulated gloves (Note:Some powder on the gloves for purpose of protection,not dirt.)