These Envelopes are designed by Seitosha, a Japanese design company that makes products from hand-drawn designs.
This design, Botan, is said to have been created by drawing flowers in various shapes to create a gorgeous pattern like the old Chiyogami.

-Size: 9.2cm x 16.2cm (3.62" x 6.38")
-3 envelopes

星燈社さんのポチ袋。
この図案の「ぼたん」は昔の千代紙のようでいて、今の暮らしにも馴染む小花模様がデザインされているそうです。

横9.2cm×縦16.2cm 1セット同柄 3枚入り