The first anti-fatigue boots that protects from the cold and is manufactured by hand in France. Waterproof, adjustable gussets. Lining: 4.5 mm neoprene. Insole: 4.5 mm neoprene. Outsole: Three density natural rubber shock absorbing soles. Upper: Primarily Gomma Plus natural rubber. These boots offer comfort for longer, fatigue-free walks with their tri-density rubber sole and shock-absorbing cushioning. Designed for experts and farmers, these robust, technical boots are ideal for professional, long-term use. Features include an insulating Neoprene® lining, a self-cleaning notched outsole for cushioning, stability and abrasion resistance, excellent grip, and a waterproof and adjustable gusset. Made from natural rubber. Care instructions: Clean boots regularly with clear or slightly soapy water (PH Neutral). Wipe boots with a fluff-free cloth. Apply a dose of Swipol a few times a year, or more often if you use your boots daily, to treat the rubber and restore its original appearance. Store away from light and heat, in an upright position after cleaning. Use a colorless polishing sponge to clean and shine your shoes and boots.