The double wall insulated big glass with lid from Elitea is as described on the product description page. It is a large 15 ounce size clear borosilicate glass. The temperature range is from -4 degrees Fahrenheit to 302 degrees Fahrenheit. So for hot or iced beverages. I have other double wall borosolate glasses but not one that is 15 ounces. I got it to drink my early evening flavored ice coffee. It has a wood lid with a silicone type of gasket. It does prevent spill when transporting but it isn’t leak proof where you could lay in down inside a bag. The double wall insulated glass prevents condensation as well as you are able to grip the glass when it contains a hot beverage. Not recommended for dishwasher, so I am deducting one star for that. Upkeep and care are two things I think about when getting an item. I received this free in exchange for my review.