Bake to your hearts' delight! Top-rated Naturals Bakeware collection is made of pure aluminum for superior heat conductivity and produces consistent evenly browned baked goods every time. Set has 1/8 sheet, quarter sheet and Jelly roll which has encapsulated galvanized steel rims to prevent warping. Measurements are: Eight sheet measuring 10" x 7" 1.5".,Jelly Roll 15.8" x 11.3" x 1" , quarter Sheet 13" x 9.6" x 1"