Melitta Toppits stands for quality. When Ziploc - bags the technological advantage clearly shows. There are cheaper imitators) No Name, trademarks) that are cheaper, but the quality comes barely serve up some of Toppits Ziploc. Often fails to Billigproduukten the closing already at 2, 3 opening. The Melitta, however, are very robust and can be easily cleaned. Thus, they come to me mostly repeatedly used what the slightly higher price equalizes quickly. Full 5 stars for this innovation.