1,This set number cake pans are made of high quality silicone material, about10 inch large（the longest side out size ）, deepth is about 1.86 inch. 2,Such a large size can make large birthday cake ,reusable. 3, 9 Piece, since the 6 the same as 9, so you can use 6 to make cake 9. 4,These silicone baking molds ensure that your cakes come out clean every time and in one piece with perfect edge. 5,Cean the molds before first time usage. 6, We take pride in delivering top quality products and guarantee a FULL refund if you are not satisfied with our molds. 7,Lifetime warranty for any issues and our complete customer service gives you comfortable purchase experience. buy it with confidence now.