The Bogside Publishing B-150 M is a 4-1/8 x 6-1/2 pocket size book. 6 vertical grid pattern printed on white ledger paper that has 50% cotton content and is specially formulated for maximum archival service, ease of erasure and protected by a water resistant surface sizing. 160 pages with 16 page curve table. This high-quality field book has sewn in pages with a water-resistant hard cover and is printed and bound in the USA with a very high quality control. If you're looking for yesterday's quality, then you've found it with Bogside Field Books.