TOPOKO stainless steel vacuum insulated water bottles are the topest quality insulated water in the market!?Material:18/8 stainless steel?Advantage:-Non-rusty-BPA free-Lifetime warranty-Double wall vacuum insulated-Keep your beverage of choice at your preferred temperature for hours, whether you choose hot, cold or room temperature liquids.-Lightweight, making them great for long hikes, days on the beach, hot yoga classes, golf, long road trips or everyday office use.You can choose Stainless steel lid for this bottle!