The paper wouldn't be torn easily and curl at edges. The colors can last long time Size 6 x 6 (15 cm x 15 cm), the most popular size for origami Origami sheets are wrapped in a beautiful hard box.The box can collect well the rest unused sheets and these sheets won't be messed up. you can save your time collecting them. AZO free ,Without Any Bad Smell Promise: the quality of our origami paper can be guaranteed , it will be your professional choice.