Obstinate AF Dragon. Same dragon. Same absolute refusal to budge. This version drops any pretense. AF means as f*ck- and this one is for the people who want to be unambiguous about exactly how obstinate they are. Which is: extremely. This tumbler is for the person who looked at the standard Obstinate Dragon and thought: not strong enough. Who is not just obstinate but obstinate AF. • Stainless steel, double-wall insulation • Spill-resistant lid • Hand-wash recommended Obstinate AF. Non-negotiable.