The size is very large! Just what I wanted. First problem is that when filled up and loaded, too heavy to handle without an optionall handle. The 30oz size allows for optional handle...why not the 40oz? Filled with hot coffee this monster is a disaster waiting to happen. Imagine yourself in a tree stand and trying to hold it with yor gloves on...bye bye any cover you had and the distinct aroma of coffee hits the ground. Oops. My advice is do not purchase for any reason. The top is a see-through gray plastic that is NOT a good insulator for your drink, may it be hot or cold. Might as well use plastic wrap for all the heat or cold transfer. I have looked everywhere for a so!ution for the handle. These things might as be used for a fancy flower pot. I rarely ever give negative reviews..but this product is dangerous too handle, high potential of spilling and simply a waste of money without a handle. Imagine this... you are trying to drink out of a bucket?