Reticulated (like a net) Polyester Urethane foam, more expensive than Polyether, provides a much higher degree of performance, durability, and consistency. Lightweight, resilient, excellent vibration dampening and insulation properties. It also offers high resistance to chemicals and moisture.
Polyether urethane foam is softer, with superior resistance to moisture, and is better for cushioning in wet conditions than polyester. If you need more tensile strength and support, the polyurethane ester foam is better.
Cushioning, tool shadowing, fitment in wet conditions.