Caulk boots or calk boots  (also called cork boots, timber boots, logger boots, logging boots, or corks) are a form of rugged footwear, most often associated with the timber trade but also suitable for use in hiking and in other heavy industry such as manufacturing and construction, due to their safety features.
Timber boots are typically made of leather or suede uppers extending over the ankle, with a thick rubber sole to provide protection and grip, and bearing deep treads or spikes. The ankle is typically cuffed with padded leather. 
- "Logging Operations", OSHA
- "Caulk Boots", Stanhope Heritage
- "Work Wear- A Guide For Finding The Best Work Boots For Loggers". Retrieved 14 September 2018.
- "Google Images search for Timber boot". Google Images. Retrieved 14 September 2018.
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