Coil binding is an alternative to plastic ringbinding and wire binding.
Mostly used for documents that require frequent handling and lay-flat requirements. The binding cannot be undone to replace/add pages, but it is more hard-wearing than the standard plastic ringbinding. This type of binding can withstand being squashed into an over-full briefcase without being permanently flattened like wire binding.
Diaries for 2021 now available. Get a free screen cleaner pen and 50ml sanitiser with every diary!