The quality of the Gillette Fusion blade is of course good and so as usual from the retail sector. However, the 12 blades do not come in 3 holders of 4 blades, but in 4 holders à 3 blades, which I think is the one for wasted space and more for absolute nonsense when you think about words like sustainability. With even the loose blades would be enough in a beaker. If you own a Fusion razor, you have probably at least one blade holder under the razor case. Absolutely incomprehensible!