Hobonichi 2026 A5 Cousin Techo Book & Cover Set - Leather: TS Basic Black (English)

Preview only - Launch Date: August 31st - 9 PM CST

We created this black leather cover with graphic designer Taku Satoh, who is in charge of the Hobonichi Techo’s design direction.

TS stands for the initials of Taku Satoh. Out of all the various Hobonichi Techo covers, this has been a staple in our lineup and has been a popular choice for over ten years.

The fine texture of the matte cow leather is soft from the first time you use it and fits comfortably in your hands. The smooth feel as you hold it in your hands is another characteristic of this leather.

The leather cover exudes an elegance with a black color that will suit any outfit. It makes it an ideal first-time leather cover and is also perfect for anyone who wants to own a standard leather cover that is simple, chic, and timeless.

The Hobonichi Techo leather covers are made with all-natural materials that have their own unique appearance. Every leather cover is a one-of-a-kind, all-natural product, so you can feel good knowing your cover is the only one like it in the world. Here are some of the unique characteristics you can expect to find.

- Markings that naturally occur during an animal’s life:
Wrinkles, veins, texture, and scratches

About Taku Satoh

Graphic Designer. Graduated from Tokyo University of The Arts in 1979, majoring in design, and completed his master’s degree in 1981. Joined Dentsu, Inc. before establishing the Taku Satoh Design Office in 1984. Created product designs and branding for Oishii Gyunyu milk, Lotte XYLITOL gum, and much more.

Currently active across a broad spectrum of projects, including general direction for NHK Educational TV’s “Design-Ah” series and art direction for “Nihongo de Asobo.”
Current director of design museum 21_21 DESIGN SIGHT in Tokyo.

TSDO Website

Size - H: 228 x W: 337 x T: 3 mm / H: 9" x W: 13.3" x T: 0.1"
*Excluding pen holders
*Specifications may vary slightly

Exterior: Cow leather / Interior: Cow leather, polyester