Top Opening Field Books Produced to the highest specification using 50% rag bond paper with high cotton content giving excellent tear resistance and strength when wet Strength of writing surface is retained when dried even after being subjected to adverse site or weather conditions 160 pages printed with permanent waterproof ink Casebound wipe clean covers and traditionally sewn in sections with rot-proof thread to withstand even the most demanding environments Covers fold flat for ease of use 80 leaves Ruled 2 red centre lines with blue feints Size: 106x165mm Writing surface is retained even after being subjected to adverse site or weather conditions Produced to the highest specification using quality wet strength paper with high cotton content giving excellent tear resistance when wet Sewn in sections with nylon thread to withstand even the most demanding environments Covers fold flat making it easier to write entries