Da Vinci Personal Notebook Series was born in 1996. Still a popular series with a solid texture through the craftsmanship that remains the same. Made of soft cowhide leather (Super Lois) that is comfortable to the hand. Pocket Size 8mm Ring Diameter The size of the notebook is just the right refill size, which is close to the size of the refill. This is a thin and compact journal that feels like a bind notebook. It can be stored in a wide pocket for excellent portability. Pen holder included (up to 0.6 inch (14 mm) diameter); Set Contents: Main unit, Refill (personal profile x 1, bookmark x 1, schedule / monthly x 14, notebook x 30, checklist x 10, back cover x 1). Package Size: 14.5x2.2x9.5(Cm) Country of Origin: China W 3.4 x H 5.4 x D 0.6 inches (8.6 x 13.6 x 1.5 cm) Ring inner diameter: 0.3 inches (8 mm) ASIN B00IYETBH2 Color Black Format Organizer Binding Unknown Binding Material Leather Brand Name レイメイ藤井 Model Year 2016 Paper Size A5 Unit Count 1.0 Count Item Weight 4.64 ounces Part Number JDP3009B Manufacturer レイメイ藤井 Model Number JDP3009B Cover Material Leather Target Audience Adult Paper Dimensions A5 Item Dimensions L x W 5.4 L x 3.4 W Recommended Uses For Product time management, scheduling appointments, personal organization, task management Item Dimensions L x W x Thickness 5.4 L x 3.4 W x 0.6 Th Global Trade Identification Number 04902562432359