KEEP WARMThis insole is made of cotton blended material, with artificial fleece design, which is more warm in winter and keeps your feet from being cold. MAKES IT WARMERIt is better to put the shoe cover on the radiator to preheat first, or some warm place, but not too hot, convenient and warm. EASY TO USEEasy to use, just put the insole into the croc clog and put it on, saving time and convenient for installation and disassembly. GREAT FOR CROC CLOGSSuitable for all hole shoes, it is the best choice for wearing hole shoes in winter to keep warm, keep you comfortable and warm. THREE SIZES TO CHOOSEWith total three sizes for you to choose: EU35-36, EU37-38 and EU39-40, to meet the needs of different people. Specification: Material: cotton blend Color: black Size(approx): EU35-36, EU37-38, EU39-40 Package: 1 pair x croc clog insole Note: 1. Due to the light and screen difference, the item's color may be slightly different from the pictures. 2. Please allow 0.5-2 cm differences due to manual measurement.