EXTRA STRONG - 225pcs pre-cut parchment paper sheets made of extra thicker 45gsm paper vs commonly used 35gsm or 40gsm paper, it's about 12% thicker than others'. PRECUT PARCHMENT PAPER SHEETS - Pull one of the pre-cut 9x13 inch parchment sheets out and it's ready to use. HEALTHY & NON-TOXIC - Katbite parchment paper sheets 9x13 made from natural 100% wood pulp and totally fluorescent free. Food grade silicone coating makes your baking safe and non-toxic. MULTI-PURPOSE - Katbite 9x13 baking sheet’s temperature resistance is from -68 to 450 degrees Fahrenheit, you can find it everywhere in kitchen whether in freezer, microwave or air fryer as long as you can think of it. NON-STICK & EASY TO CLEAN - Food can be easily slide off from the baking tray and you just need to remove the paper and throw it away after baking.