Cave Diving Marker — durable ABS construction, compact and lightweight design, bright colors and builtin luminous material for reliable underwater visibility. Key benefits Improves navigation and safety: Bright colors and a luminous surface make the marker easy to spot in lowlight conditions, helping divers locate lines, exits or points of interest quickly. Durable and longlasting: Constructed from ABS for dependable, repeated use in harsh underwater environments without significant wear. Low bulk, easy handling: Compact, lightweight profile reduces drag and is simple to carry, place and retrieve during dives. Passive luminous light: The marker absorbs ambient light and glows in dark conditions, providing visibility without batteries or electronics. What it solves Reduces time spent searching for route markers in caves or wrecks by offering clear, visible reference points. Minimizes gear bulk while maintaining reliable marking performance for complex penetrations or team navigation. Provides a lowmaintenance visual aid that remains useful even when electronic lights are limited. Important attributes Material: ABS construction for strength and longevity. Visibility: Bright colors plus passive luminous surface for night or lowlight environments. Size and weight: Compact and lightweight for easy stowage and handling underwater. Function: Designed specifically as a cave diving marker to assist with navigation and marking tasks. Typical use scenarios Cave diving: Marking guideline intersections, route changes and exit directions to keep team members oriented. Wreck penetration: Indicating access points, important features or safe egress routes inside a wreck. Training and drills: Setting up clear, visible reference points during navigation, lostline or team coordination exercises. Practical notes The marker is intended as a visual aid and complementary tool to standard dive procedures and lighting. Store where it can absorb ambient light before a dive to maximize its luminous performance.