Customers say this transparent shaker lets them easily monitor drink colors and liquid levels. Some note issues with lid tightness - a few find it too tight, while others mention occasional leaking if not properly sealed. Many appreciate the durability and ease of cleaning. The clear design draws frequent praise for its simple, clean appearance. While most find it sturdy and reliable, some mention it runs small for their needs. The built-in measurements and mixing guard receive positive mentions. Several note they received it as a complimentary item and find it meets their basic needs.