Aero 5619 Supple Leather and Vinyl Conditioner - 16 oz. Leather and vinyl conditioner replenishes the essential nutrients, prevents drying, cracking and aging Formulated for aircraft, perfect for your car Unsurpassed performance SUPPLE conditions by replacing natural oils in the leather providing deep conditioning power. SUPPLE was specialy formulated to service leather seats found in todays VIP jet aircraft. Keep your seats looking just like the day you bought your vehicle.