Nos Surplus Quatro Safety Boots - Dielectric Thermal 15 Knee 。Skellerup Quatro Dielectric Boot $94.78 retail value online currently. Weight: 5kg High-spec, fully waterproof, hand-built Rubber dielectric safety boot. Manufactured with specially formulated insulating layers offering electrical protection over the whole boot. Yellow upper allows for easier visual identification. Built with a generous fit, while also locking the ankle and preventing heel slip. Designed to insulate the foot and lower leg against the risk of electrical shock through exposure to high voltages.