T-Prene jacket remains flexible in extreme cold temperatures and is oil, chemical, and water resistant. Polar-Glo clamp is ergonomically designed to be handled by everyone. Clamps have triple-polarity identification: color coding, indent stamping, and glow-in-the-dark labels. All energized clamp surfaces are shielded to avoid short circuits, all conductive clamp surfaces are recessed to prevent accidental contact. Fits top post and side terminal batteries. RoHS Compliant. 16' length.