The goshuin-cho (stamp book) is 12.2 cm wide x 18 cm long x 1.7 cm thick. The ume-musubi (plum blossom knot) is about 3 cm, and the rubber band is 1 cm wide. It's a 5-strand mizuhiki (decorative cord) made with orange mizuhiki and glitter mizuhiki on the inside and outside. Besides a goshuin-cho, you can also use it for a lunch box, small box, etc. Please see the profile.