Silicone non-slip mat with measurement markings. - Material: Silicone - Color: Brown - Size: 30cm x 40cm Used by students about 3 times when I held a bread-making class. I will be selling it as I don't plan to hold any more classes. This is a set of 4 items: the mat, a 21cm bowl, a 22cm rolling pin, and a scraper. Thank you for looking.