Easily refill your favorite men's cologne at home with this innovative fragrance refill bottle. Save 22% glass, 67% metal and 32% cardboard used compared to making new fragrance bottles. An auto-stop/anti-spill system automatically stops the refilling process when the bottle is full and without wasting any fragrance. This refill is compatible with 1.36-oz., 2.5-oz. and 4.2-oz. bottles for Polo Red Eau de Toilette.