Perfect quality set of Kcups for any coffee lover. If you love great tasting quality thrn grab these. They do not stop up like most and are amazing quality. Their made of stainless steel to keep down corrosion and build up from hard water. They are very sturdy and well made. The lid functionality is amazing. As of others i have had were the lid comes off easily these seem so far like they are going to last for a while. I mean just like anything else, with proper care.