100% Food-grade silicone, FDA approved,BPA free,eco-friendly, non-toxic, flexible, reusable and durable;Never use paper cups!;Great for Halloween, birthdays and holidays,Real party favorite;Perfect for Paleo diet recipes and the kids bento box - Use for gelatin,cupcakes muffins, frozen treats, snacks, ice cream ,for fantastic cheesecakes,for chocolate shell-lined desserts. cooking eggs and other dishes.;All silicone baking cups are made from BPA free, eco-friendly,non porous,FDA approved and stain proof silicone!;Set of 36 ,12pcs Round:include 4 fun, vibrant colors (pink, yellow,blue and red);12pcs Heart-shaped:include 4 fun, vibrant colors (pink, yellow,blue and red); 12pcs Rectangular include 4 fun, vibrant colors (purple, yellow,sky blue and green), packaged in a convenient,durable, transparent storage container,Beautify your kitchen pantry.;Each Rectangular cup measures L*W*H:80mm*50mm*22mm, and can hold 1.78 fluid ounces.Each Round cup measures 2.75-inch diameter x 1.25-inch tall and can hold 2.15 fluid ounces.Heart-shaped measures 2.75-inch x2.75-inch x 1.25-inch tall hold 2.15 fluid ounces.