Maybe because the fabric is cheap. And I have just received my second pair of this exact shoe and model, my signature shoe. Yes, sand gets in the footbed but it washes out easily in the river. Im Gegensatz zu vielen anderen gefütterten Crocs ist hier das Futter fest verarbeitet. The package that holds the cotton tips is not sealed for sanitary purposes. My daughter LOOOOOOVED these slippers. A little hard to install but work fine A taxi driver called me a fat something christmas tree following a near miss altercation which i was quite pleased with. If you buy it, keep in mind, its more for a decorative piece than full function. glad they were cheap.