Tougher than Polyurethane. More chip and impact resistant finish. Resists cracking, checking and peeling, contracts and expands with wood. Resists yellowing contains ultraviolet absorbers. More durable than Spar varnish. Harder, more scratch and scuff resistant. Faster drying time. Protects wood from water . . .also salt air, sun damage and atmospheric pollution. Many uses ideal for patio furniture, exterior doors, bar tops, wooden boat surfaces wherever and extra tough, clear finish is required.