Firefly Tinted Green Bivvy Zip Marker

• Firefly Bivvy Markers: Easily locate tent and bag zips in darkness
• No need for torches or chemical light sources
• Nine visible color options for easy identification
• Stainless steel split-ring for quick fixing
• Each marker contains a trigalight® for continuous light
• No battery or charging needed
• Manufactured and tested to UK MOD standards
• Lasts over 10 years without maintenance
• Suitable for all environmental conditions, even underwater
• Enhances operational efficiency and safety in darkness

Firefly Bivvy Markers allow tent and bag zips to be marked so they can be seen, located and operated by the occupants in darkness, enabling immediate action without using electric torches or 'cyalume' chemical light sources. Visible from distances of up to 10mtr in darkness with the naked eye, nine visible colour options are available so that identities and functions can be differentiated by colour. Bivvy Markers utilise a compact, stainless steel split-ring to provide quick and easy fixing to items of equipment. Each Bivvy Marker incorporates a 1.5x6mm trigalight® housed within a tough, clear polycarbonate enclosure. Also suitable for covert, general marking applications, the Bivvy Marker's limited light output offers a restricted viewing distance. Simple, reliable and very effective, operational efficiency and safety are enhanced in darkness. Simple, reliable and very effective, operational efficiency and safety are enhanced in darkness.

Bivvy Markers incorporate a trigalight® Gaseous Tritium Light Source (GTLS) which provides a reliable, safe and selfpowered source of continuous light output. No battery or charging by ambient light is required during the lifetime of the product. GTLS comprise a sealed borosilicate glass capsule which contains a tiny amount of gaseous tritium, the power supply for the device. Beta-particle radiation (ie. electrons released by the gaseous tritium as it decays) is harnessed to energise a phosphor coating on the inside surface of the capsule, causing it to glow. As a sealed source, they are nonemissive and of very low energy levels, so there is no external radiation risk. Every trigalight® source light is manufactured and tested in accordance with the UK MOD Defence Standard 62/4. GTLS contain no moving parts and, because the unit is continuously energised, an off/on switch is not required. They will remain energised for more than 10 maintenance-free years, even during extended periods of complete darkness. Trigalight® devices can be used in any environmental conditions, even under water, and in temperatures ranging from -40º to 80ºC. They are suitable for operation in Zone 0 hazardous areas.

Trigalight® technology provides a constant, reliable source of light without the need for batteries, charging, or maintenance.

Manufactured in Switzerland by MB Microtec, Trigalights are Gaseous Tritium Light Sources (GTLS) designed for long-term performance in all environments. They continue to glow day and night, regardless of temperature, weather, or light conditions.

Key benefits:
• Always on — no charging or power required
• Performs in extreme conditions
• No maintenance or moving parts
• Does not affect night vision
• Available in multiple colour options

Unlike glow-in-the-dark materials, Trigalights do not need to be “charged” and will not fade in darkness. They provide consistent visibility for years, making them ideal for everyday carry, low-light environments, and critical visibility applications.

We aim to dispatch all orders quickly and securely.

UK Orders:
• Dispatch: 1–2 working days
• Delivery: 1–3 working days
• Fully tracked service

International Orders:
• Dispatch: 1–2 working days
• Delivery: 5–12 working days (location dependent)
• Tracked shipping included

Please note:
• International orders may be subject to customs fees or import duties depending on your country.
• Delivery times are estimates and may vary during busy periods.

You will receive tracking details as soon as your order has been dispatched.

If you have any issues with your delivery, our support team is here to help.