These are a very good idea, and looked to be a better design than the circular ones I had earlier, since there is a hook for hanging on the washing line. They are very inexpensive, and would keep your socks from getting mixed up. HOWEVER the plastic is much too hard, and it is virtually impossible to get socks in. I even put them in the microwave, to try to soften them up. Previous sock sorters have been made of a much softer polythene, which makes it easy to insert the socks. So unfortunately I have had to throw these away, and will now buy some different ones.
Do Less, Get More: How to Work Smart and Live Life Your Way By Sháá Wasmund