The yellow 4" x 6" Top-Spiral Notebook is small enough to pocket and tough enough to survive the wrath of Mother Nature. 50 sheets of patented weatherproof paper endure rain, sweat, mud, snow, oil, and grease. Impact-resistant Wire-O binding can take a beating without getting bent out of shape. Remove the Wire-O binding and the book is completely recyclable. Scrappy PolyDura covers are printed with handy rulers and jobsite reference material. The green Universal Grid page pattern accommodates writing, charting, mapping, and other applications. Invented in 1916, Rite in the Rain All-Weather Writing-Products have been made in Washington State for a century. Durable, reliable, weather-resistant, and recyclable - Rite in the Rain All-Weather Writing Products Defy Mother Nature.