The bakeflon extendable perforated baking mat has a non stick teflon coating making it easy to use and clean to save you time the perforated mat ensures that your bake is crisp on the bottom by allowing moisture to escape so you can consistently get an even bake even in a busy commercial kitchen these mats are extremely lightweight for easy handling extendable to fit your oven and can last over 2000 uses size 400w x 600dmm teflon non stick coating can be used up to 2000 times