These are cornets (piping bags) for holding icing cream, used when making icing cookies. As a certified icing cookie instructor, I will help you make cornets. Made with food-safe OPP sheets. Taped and ready to use immediately. 【Size】 Large: 18cm x 18cm OPP sheet (finished rolled size: approx. 13cm) Small: 15cm x 15cm OPP sheet (finished rolled size: approx. 10cm) Please use them for classes, workshops, handmade projects, etc. Made with care, but please understand that there may be slight variations due to being handmade. They will be placed in an OPP bag and shipped in an envelope.