GULL MANTIS LV Dive Mask
Refined Styling, Low Volume and an Exceptional Field of View
The GULL MANTIS LV combines the heritage of the iconic MANTIS with a refined low-volume design engineered for excellent visibility, comfort and performance.
Designed for both scuba diving and skin diving, the MANTIS LV features an exclusive twin-lens shape, reduced internal volume and optimised lens inclination. Together, these features bring the lenses closer to the eyes and extend the field of view both vertically and horizontally.
With a mask volume of just 110cc, the MANTIS LV provides a particularly useful downward field of vision, making it easier to see equipment and perform common diving tasks around chest level.
The mask is equipped with GULL's UV420 CUT AR Amber Lenses, combining UV and HEV light protection with an anti-reflective coating and an amber tint designed to increase underwater contrast.
UV420 CUT AR Amber Lens
The MANTIS LV features GULL's UV420 CUT AR lens technology, designed to reduce transmission of ultraviolet light up to 400nm and HEV (High Energy Visible) light between 400–420nm.
These wavelengths can contribute to oxidative stress and deterioration of lutein, a naturally occurring pigment in the retina that plays an important role in protecting the eye from potentially harmful light.
The amber lens tint also increases visual contrast, helping edges and objects appear more defined underwater, particularly in environments where visibility and available light are reduced.
Although the lenses have a light amber/yellow tint, the reflective coating can cause them to appear blue when viewed from certain angles or in photographs.
AR Anti-Reflection Coating
Conventional lenses can reflect a portion of incoming light, reducing the amount of light reaching the diver's eyes.
GULL's UV420 CUT AR lenses feature a single-side anti-reflective coating, providing approximately 95% light transmittance, compared with approximately 92% for conventional lenses.
The result is a clearer and brighter field of vision that more closely resembles natural eyesight.
Reduced reflection also makes the diver's eyes easier to see through the mask, which can assist with eye contact and non-verbal communication underwater.
Amber Lens for Enhanced Contrast
The amber colouring of the UV420 CUT AR lens is designed to increase contrast rather than simply increase overall brightness.
Similar to the way orange lighting can make edges and shadows more distinguishable, the amber lens enhances contrast to help underwater objects appear more clearly defined.
This can be particularly useful when diving in conditions where subtle differences in shape and contrast are important.
Super Clear Lens
GULL's Super Clear Lens is manufactured to maximise light transmission by rigorously reducing impurities within the glass.
This provides greater optical clarity than standard glass and allows underwater objects to be viewed with improved definition.
When combined with a clear silicone skirt, internal reflections from the skirt onto the lens are also minimised, contributing to an even cleaner field of vision.
Low-Volume Twin-Lens Design
The MANTIS LV retains the distinctive form of the original MANTIS while reducing the mask's internal volume.
Positioning the lenses closer to the eyes helps increase the diver's field of view while also reducing the amount of air required to equalise the mask.
The combination of the exclusive lens shape and optimised inclination angle extends visibility both horizontally and vertically.
Extended Downward Field of View
The inclination and shape of the MANTIS LV lenses work together to improve downward visibility.
This provides a clearer view towards chest level, where many diving tasks take place, including checking and operating equipment.
The enhanced downward field of vision is particularly useful when accessing BCD controls, gauges, clips and other equipment without excessive head movement.
Skirt with Curled Lip and Integrated Strap Clip
The MANTIS LV features an all-in-one skirt design incorporating a curled lip and integrated strap clip.
The skirt is designed to maintain firm yet gentle contact with the face. As the mask strap is tensioned, the skirt forms an effective seal while helping reduce excessive pressure and impressions on the skin.
This construction contributes to both comfort and stability during extended dives.
Soft Damper
Masks designed to maximise downward visibility can place additional pressure around the cheekbones due to the shape and angle of the frame.
GULL's Soft Damper helps absorb and distribute this pressure, reducing stress around the cheek area and improving comfort during longer periods of use.
Drain Skirt
The integrated Drain Skirt is designed to improve water expulsion during mask clearing.
Its shape helps direct trapped water towards the lower section of the mask, making clearance easier while reducing the tendency for water to pool inside the skirt.
DX Spec Mask Buckle
The DX Spec Mask Buckle provides precise strap adjustment while the mask is being worn.
Its release mechanism and fine-pitch adjustment system allow the diver to achieve a comfortable and secure fit with minimal effort.
The buckle is designed for convenient one-handed operation, including when wearing thick diving gloves.
Key Features
- Low-volume twin-lens dive mask
- Designed for scuba diving and skin diving
- 110cc internal volume
- Wide vertical and horizontal field of view
- Enhanced downward visibility
- Optimised lens inclination
- UV420 CUT AR Amber Lenses
- UV and HEV light protection
- Anti-reflective lens coating
- Amber lens technology for increased contrast
- Approximately 95% light transmittance with AR lens
- GULL Super Clear Lens technology
- Skirt with curled lip
- Integrated strap clip
- Soft Damper for improved cheek comfort
- Drain Skirt for easier mask clearing
- DX Spec Mask Buckle
- Fine-pitch strap adjustment
- One-handed buckle operation
Specifications
| Specification | GULL MANTIS LV |
|---|---|
| Model | GM-1291D |
| Mask Type | Twin Lens |
| Lens | UV420 CUT AR Amber Lens |
| Lens Technology | Super Clear / Anti-Reflection |
| Internal Volume | 110cc |
| Weight | 220g |
| Use | Scuba Diving / Skin Diving |
Volume and weight are measured according to GULL's standard measurement procedures.
Why Choose the GULL MANTIS LV?
The MANTIS LV is designed for divers who want the classic MANTIS platform with lower internal volume, excellent downward visibility and premium optical technology.
Its combination of a wide field of view, UV420 CUT AR Amber Lenses, Super Clear glass, comfortable skirt construction and precise buckle adjustment makes it particularly well suited to divers who prioritise both visual performance and long-duration comfort.
Whether used for recreational scuba diving or skin diving, the MANTIS LV provides a refined balance of visibility, fit and functionality.
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