Set of 10 colorful unique envelopes in different sizes: 3x 9x9 cm 1x 15.3x22.5 cm 3x 10x13.7 cm 1x 17.2x9 cm 1x 10.5x14.8 cm 1 x 11.3x16.3 cm Best way to make your mail cheerful! But you can also use them for different things, such as keeping papers or money etc.