Eco Vessel is one of my favorite companies! I have a couple of their kids bottles with the attached straw and let me tell you they are just about indestructible and my 6-year-old grandson puts them to the test. They keep cold drinks cold and hot drinks piping hot! I love these bottles and the smaller size is perfect for little hands to take on the go. Right now they are offering their newest product, The Boss which is a growler+ infuser and is perfect for teas, coffees, flavor infused drinks and even ice-cold beers! It holds 64 ounces and even looks good!Right now if you purchase the Boss, you get free shipping!! No code is needed! This one is perfect for work, travel, hiking, hunting and everything in between.