Customers appreciate the product's material, durability, and design, often preferring glass over plastic for its perceived health and environmental benefits. Many reviews highlight the sturdy construction and elegant appearance of the glass carafes. However, a significant number of customers express frustration with compatibility issues, as the product does not fit all SodaStream models, leading to disappointment and the need to decant beverages. While the functionality is generally positive for compatible machines, the lack of universal fit is a recurring concern.