Rite in the Rain's All Weather Universal Top Spiral Bound Notebook is a small shirt pocket format notebook with all the advantages of RITR Paper.
Rite in the Rain says:
The 3 in x 5 in notebooks are the truly go-anywhere, anytime, in any weather notebooks. The Pocket Notebooks are conveniently sized to take with you on your outings. With a Polydura cover and the Universal pattern, these 100 page (50 sheets) notebooks are perfect for any situation.