CT™ Economy Knee Boots, Plain Toe, Size 11, 16 in H, PVC, Black ORS NASCO requiring high mechanical strength and requiring high mechanical strength and resistance to high temperatures The glass cloth is specially treated and prepared to provide corrosion free protection It will not shrink Large flared magnetic end hook Heavy duty nylon coated blades for maximum durability Rubberized case protects end hook and button fertilizers and animal waste Flexible and durable upper allows for ease in movement for greater work comfort Removable FOOT FORM™ contour cushion insoles provide all day comfort and support Reinforced construction at critical stress points provides a durable and long wearing boot PVC injection molded footwear is 100% waterproof to ensure workers' feet are dry and comfortable PVC formulation is resistant to degradation from agricultural chemicals