Topoguide (in English) of the Arran Coastal Way (Scotland) edited by Rucksack Readers.
The guide is spiral, lightweight, waterproof, and includes a general map of the trek.

Description provided by the publisher:
The Arran Coastal Way is perhaps Scotland's finest circular long-distance trail, running 65 miles (105 km) around the Isle of Arran in a memorable week-long hike from Brodick. It's accessible from near Glasgow by the Ardrossan ferry. Famous as `Scotland in miniature', Arran is rich in scenery, castles, caves and standing stones. The walking is varied, from mountain paths to deserted beaches, from minor road-walking to boulder-hopping, and in places it is refreshingly rugged. Arran's wildlife is uniquely approachable, and its residents welcoming.
Both text and photos have been thoroughly updated after route changes and extra options created by the Coastal Communities Fund project. This third edition has mapping at 1:55,000 and 125 color photos. Its predecessor was Highly Commended by the Outdoor Writers and Photographers Guild in 2018. This edition has more pages but is lighter and more rainproof than before.
This guidebook contains all you need to plan and enjoy your Arran Coastal Way walk, including a Foreword by wilderness walker Cameron McNeish:

detailed description of the route, updated for 2021
background on geology, pre-history and history
whisky-making, wildlife and habitats
boat trip to the Holy Isle
revised mapping of the entire route (1:55,000)
information about public transport and travel
lavishly illustrated, with 125 color photographs
on rainproof paper.