[Compact Size]: Waterproof notebook is packed in 3x5 inches and can be put in your pocket and carried with you wherever you go; 50 sheets of paper can record a large amount of important information, which is enough to use. [ Material]: Waterproof notebook paper is made of stone paper, which is waterproof. You can write with a waterproof pen in heavy rain and save notes; when the paper is dry, an ordinary ballpoint pen can record notes. Paper can be for a long time without losing your important information. [Waterproof Cover]: Waterproof notepad cover is made of PVC material, which is flexible and rich in texture and will not easily tear and deform. The binding uses Wire-O, which will keep the notebook in its original appearance even if it is stuffed into a school bag. [Multi-Function]: Whether you use tactical notebook in to take notes, memos, vocabulary books, phone books, or use waterproof notepad as an outdoor reporter's record book, a police notebook, etc., waterproof notepad is useful. [Scope of Application]: All-weather notebook is suitable for daily use, and can also be used in harsh environments such as outdoor adventures and wild camping to facilitate your outing recording needs. Colour:Black Material:Paper Sheet Size: 3 x 5 inches Package Contents: 16x Notebook Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.