The Hollis Underwater Notebook is an essential tool for communication and recording information underwater. Ring binding with waterproof pages allows writing in any conditions.

Construction
- Cover: 200 Denier Cordura with organizational pockets
- Pages: Waterproof paper for reusable writing
- Binding: Ring binding for easy page turning
- Pencil: Graphite pencil on lanyard
Features
- 100% waterproof pages
- Large area for writing and drawing
- Smooth surface for writing even with gloves
- Lanyard for attachment to gear
Applications
- Communication between divers
- Recording observation data
- Dive planning
- Training and courses
- Scientific diving
Accessories
Replacement waterproof pages and cover-only options are also available.