This timeless Kokuyo notebook was initially released in 1959. With a sturdy construction and compact design, it's an excellent choice for travel and outdoor activities. Its pages are made with lightweight paper that is ideal for use with fountain pens, though wide nibs may cause some feathering.

From Kokuyo: 

Originally developed for civil engineers to make measurements in the field, the simple and industrial, no-frills aesthetic of this notebook remains unchanged since its creation more than 60 years ago. The Sketch Book is now used by many as a scrapbook, travel diary, or to take notes on the go. The cover is sturdy enough to provide stable writing while standing. Its slim size fits comfortably inside pockets. Cover is thick cardboard with dark green cloth and gold embossing. 40 sheets, 3mm grid.

Detailed Specs:

• High-quality archival paper
• Stitched lay-flat case binding
• 3mm grid, light grey
• 80 pages (40 sheets)
• Size: 95 x 165 mm , 3.7 x 6.5 "  
• Made in Japan