8oz Gray Color Plated #304 (18/8) Stainless Steel Premium Hip Flask by Caballero - Improved Corrosion Resistance Than Other Flasks STYLE: Our flask costs more and looks different than other flasks because it is the only one which has additional metal coating on top of its high quality stainless steel. This is thanks to a electrochemical process called electroplating. The benefits are both decorative and protective. The visual result? It's classy and elegant appearance. QUALITY: The protective result is the extra corrosion and rust resistance, which is better than other hip flasks you see on amazon. Furthermore it also has being made with #304 (18/8) high quality food grade stainless steel, while other cheaper priced hip flasks have either nonfood grade, thin steel, basic welding and having lesser quality steels, which eventually leads to leaking and corrosion. THICKNESS: Our 8oz flasks feature .6mm thick 18/8 food grade stainless steel. Thicker and more durable than other cheaper flasks you see on Amazon, made with .4mm-.5mm and lower quality non food grade stainless steel. LASER WELDED: Featuring precision laser welded joints, which means that the hip flask will have smooth edges and won't leak. All of our flasks are leak tested! SATISFACTION GUARANTEED: Your satisfaction is our priority. If you are not completely satisfied, after receiving your flask, for any reason, we offer a no hassle, no questions asked money back guarantee. Ships from the US!