Swimming Cap | Camo Lantern Fish (Silicone)Silicone swim cap for ages 4 18 years. Born in the deep dark sea, these little light up fish will guide you through the water. 100% Silicone Swimming in a chlorinated pool? Rinse your Poolbeanie in tap water, then dry it in the shade. Itll help keep your design vibrant and the shape true. Poolbeanie designs are printed right into the cap, so when the fabric pulls the image still looks great!