Cave Diving REM – Customizable 3D Printed Line Marker

Built for experienced overhead-environment divers, this cave diving REM (Reference Exit Marker) is a precision 3D-printed navigation marker used as a personal “breadcrumb” to help divers confidently find their way back to the exit. Compact, durable, and easy to identify, REMs are a critical tool for cave, cavern, and wreck penetration dives.

The slim rectangular profile sits cleanly on guideline without excessive bulk, while the cut-through slots allow for secure placement and quick removal—even when wearing thick gloves. Each REM can be customized or personalized, making it easy to distinguish your markers from team or permanent system markers during complex dives.

What It’s Used For

• Marking personal exit direction

• Breadcrumb navigation in overhead environments

• Identifying decision points, jumps, or gaps

• Distinguishing personal markers from permanent or team markers

Product Details

• Manufacturing: High-quality 3D printing

• Design: Cave diving REM / reference exit marker

• Use: Overhead-environment navigation

• Environment: Cave, cavern, wreck, and technical diving

Features

• Low-profile rectangular design

• Lightweight with minimal drag

• Secure fit on guideline

• Easy placement and removal with gloves

• Durable construction for repeated dives

• Designed for cave and technical divers

Customization Options

• Personalization: Add name, initials, or custom text

• Color options: High-visibility and standard color choices available

• Custom requests: Team sets or unique layouts available upon request

Important Notes

• This item is 3D printed and may show minor layer lines typical of additive manufacturing

• Intended for trained cave and technical divers only

• Always follow proper training standards and established dive safety protocols