Food-grade silicone (BPA free) and the lifetime can be several years. The fondant rolling mat is 19.7''x15.8'' (50*40cm) and 0.03'' (0.8mm) thickness. Maximum working temperature is 230 C(446F) The silicone pastry mat is non-stick and the release is also good so you don't need any flour. This is a really non-stick pad for making cookies, macarons, bread, and pastry. It will make cooking and baking more productive The silicone sheet with the great friction on the back grips the countertop well. It is super hard to move as you roll out the dough and always keep stable on the table Simply wash the silicone baking mat with water or place in the dishwasher to clean. It can be stored rolled up or folded, occupying minimal space in a drawer or cupboard It is 0.8mm thickness and thicker than most pastry mats which are only 0.5-0.6MM.This fondant mat is much thicker and durable, so it is very hard to crinkle and move as you roll out the dough. It makes the preparation of pastry and dough a pleasure to carry out without the downside of mess and excessive clean upon completion. This non-stick silicone rolling mat will make cooking and baking more productive. It is a perfect gift for housewife and cooking enthusiasts SPECIFICATION Material: Food grade silicone Size: 1915 inch (50*40cm) and 0.03 inch (0.8mm) thickness Temperature Resistant: from -40C to 230C (-104F to 446F) Package Included: 1 pcs kneading mat ColourBlue TIPS Do not use with sharp objects or as a cutting surface Do not expose directly to open flame Dry thoroughly after washing