Able to withstand even the most boisterous of crowds, the Libbey 1639HT Restaurant Basic Mixing Glass was made to keep up. Mixing drinks and shaking all the ice can be hard on a mixing glass but Libbey provided this glass a thick base that balances on any surface. The glass is thick and extends outward at the top with the ability to hold 16 ounces. With the rim being rounded pouring out the ice and mixtures is easy while the clear reflection allows anyone to peek inside once everything has been mixed properly. In addition, the inside is smooth and rounded making it easy for anything to slip and slide every which way ensuring optimal mixing of the contents inside.