The BOSS was named “Best Insulated Growler” by Craft Beer and Brewing Magazine. It is a high performance, vacuum insulated, hydration vessel that is made from premium 18/8 stainless steel and features our signature TriMax™ triple insulation and tested to keep drinks cold for 72 hours and hot up to 24 hours. The Reflecta™ lid is insulated and lined with stainless steel, enhancing temperature retention and preventing liquids from touching plastic. This two-piece lid is easy to grip, has a wide mouth for easy filling, and a soft silicone spout for a comfortable drinking experience. The lid is attached to a sturdy carrying strap, so you always know where it is, and the leakproof seal keeps your drink inside the bottle - where it belongs. Working up a sweat is natural when you exercise, but who wants a bottle that sweats? No worries here because there’s never any condensation, so your hands and bag stay nice and dry. Fill the BOSS with cold craft beer from your local brewery or fresh, hot coffee at your favorite café. Pour in chilled red or white wine and fill the infuser with chunks of fresh fruit for a delicious, refreshing sangria that will stay cold and fresh all day - or all night. The handy infuser is also perfect for tea, herbs, flavorings, or wherever your creativity takes you.