If you're needing a large format notebook, look no further. The Maxi-Spiral Notebooks have strong Polydura covers, wire-o binding, and 84, 8 1/2 in x 11 in pages (42 sheets) of waterproof, weather-proof paper.
The Rite in the Rain paper works, there's no doubt about that, so that's a good reason to buy this brand of notebook, next though is which format you need. The 373MX and the 374MX are both A4 format, which is an ideal size for larger project work or more involved writing. The choice is then between spiral bound, which allows the book to fold flat and is therefore easier for writing on, and a glue binding, which is more robust but can still be folded relatively flat.
The pages consist of blue horizontal lines with faint vertical lines forming a grid pattern should you want to use it. There's a contents page on the inside front cover.