These siicone baking mats are wonderful! I have some others frompast purchases, but they are all one size. One of the reasons I wanted to buy this paack was the 3 different sized mats! They are great! I make a lot of meringue cookies, which are supposed to be baked on parchment paper, but parchment paper gets expensive and wasteful! These mats make my meringues a breeze and they cook perfectly on them! Clean up is soooo easy- you literally run it under the faucet and scrub a little- depending on what you cooked on it- then lay it out to dry. They roll up (or wad up) to fit for storage just about anywhere. I love these and highly encourage any baker to grab some!