Small Letter Sets "Promenade" is produced by Mizushima, a Japanese stationery brand that produces paper goods and stationery.
And it is designed by Japanese illustrator Necktie.
A small letter set made of thin machine grazed white paper, which is often used for wrapping paper, and Satosgami paper, which has a rough texture. The size is small but useful for sending messages or thank you notes.
Comes with 3 translucent envelopes.

Writting paper:
-6 paper x 2 design
-93 x 120mm (3.66" x 4.72")

Enpelopes:
-3 Envelopes
-100 x 65mm (3.94" x 2.56")