ocean reef mask

Ocean Reef Mask

As a diver, I have always been fascinated by the ocean. The underwater world is so alien and yet so familiar to me. It is like a parallel universe that I can visit anytime I want. But there is one thing that has always kept me from exploring the depths: my face. The Ocean Reef Neptune Space G Mask has changed all of that. This mask is perfect for both beginner and experienced divers alike and it comes in a variety of colors to match any outfit. Let’s discuss and review it deeply in more detail.

Our newest Integrated Diving Mask system: the Space Extender, is the mask for the avid diver, advanced adventurer and diving professional.

  • Cold water certified, balanced, on demand, integrated regulator.
  • Polycarbonate visor (siloxane double coated for scratch resistance).
  • Directional exhaust valve (4 positions).
  • Dive / pre dive switch.
  • Lifetime warranty!
  • Includes the Extender Kit (frame + accessories).
  • SAV (Surface Air Valve) included.

This IDM has it all.

A fully customizable product that can serve all your needs and grow with your preferences thanks to a full line of accessories that can be integrated at any time with your mask.


Black, Cobalt (face seal) S/M, M/L – Orange (face seal) M/L – Yellow (face seal) M/L


all Black – all Yellow – all Orange – NEW! all Cobalt


Black/Black S/M OR025102, Black/Black M/L OR025103 – Cobalt/Cobalt S/M OR025109 – Cobalt/Cobalt M/L OR025110 – 


The Neptune Space is available in two sizes, Small/Medium and Medium/Large.The sizing and measuring system were designed in accordance with the official measuring procedure used in the Los Alamos Scientific Laboratory Charts at the SBCCOM Mask Fit Facility-Aberdeen Proving Ground (Maryland, USA). Before purchasing a mask, the customer may use the calliper to take two simple face measurements. Using the Full Face Mask Size Recommendation Chart, he or she can evaluate the size category into which the measurements fall. There are three different size categories on the chart: Small/Medium, Both, & Medium/Large. If the measurements fall within the both category, then the diver should technically be able to wear either full face mask (M/L or S/M), and in that case should try on a mask to select the best fit. Please note that the chart boundaries fade. The fading areas represent less common face measurements. It is very likely that a mask will still fit comfortably even if measurements are located in these fading areas. If needed, OCEAN REEF has available to purchase a measuring kit.

Customer feedback


Amazing mask

Tucker K.

I love this mask, words can’t even begin to describe how great it is. Diving with a full face mask is just amazing compared to a normal mask and rig setup. I love how well this mask fits, even with my facial hair it seals really well. And the glasses attachment works fantastic with the mask. If your looking for a full face mask thats not to expensive yet is really good quality I would definitely go Ocean Reef.


Best Purchase I ever made


I debated for a long time on buying the FFM due to the price and additional addons needed. I added the surface air valve and swivel quick disconnect. And attached to my aqua lung 1st stage.  It doesn’t flood, it doesn’t fog, and the visibility is better than any conventional mask. Clearing the ears is very easy once it is set up correctly which took some time adjusting it and practicing donning and doffing the FFM. You breather either through your nose or mouth without any issues. Clears very easily during the training for removing and donning underwater. Another good feature I discovered which is not widely talked about is while at the surface in rough water it performs awesomely if you open the surface valve, by just tilting my head to the left in rough water any water that does enter the mask just goes to the chin area and as soon as i breath out normally the water evacuates the mask never reaching the mouth or nose area and I don’t need to carry around a snorkel to use while waiting on the boat.

The GDivers series IDM (Integrated Diving Mask) is the perfect mask for the sport diver. Suitable to start diving (proper training required of course) or for an already passionate diver, the GDivers is the perfect first step into the IDM, Full Face Masks world, without having to compromise in the quality of the product, with endless possibilities of customisation, whenever desired.

Key Features

Cold water certified, balanced, on demand, integrated regulator.
Polycarbonate visor (siloxane double coated for scratch resistance).
Exhaust/draining valve.
2 year warranty.
6 point harness for secure and comfortable fit on the head.

Looking for a full-face mask with communications package Ocean Reef’s Neptune Space G with GSM G Communication System has your number. The Neptune Space G.divers mask is available in multiple sizes and color options and includes an integrated balanced 2nd stage regulator with a 3/8″ threaded 31.5″ (80cm) low pressure hose. The patented bellows style face skirt, molded from premium grade silicone rubber, uses a spring profile and large sealing double the size and spacing (30-45mm), to achieve a very comfortable fit and ample support. This spring effect is a combination of the double S section and the inner support ribs which allows the G.divers full face mask to float comfortably on the face. The head strap is directly attached to the face shield, allowing pressure to be distributed equally along the mask skirt. The six straps of the head harness hold the mask in a firm position due to their low elasticity. The tip of each rubber strap is wider, making them easier to grasp while wearing neoprene gloves. The FRB II (fast rotating buckle) allows the mask to be donned and doffed quickly. These unique face seal and strap concepts are Ocean Reefs patents.

The streamlined visor, made of transparent polycarbonate, is designed to be wider and sit closer to the face than previous full-face masks. The G.divers design maximizes the visual field, particularly the peripheral area. The visible light transfer of the visor is 92%. These factors give divers an astonishingly clear view of the underwater world.

Customer feedback


Great mask

By Hunter

This is a great mask that offers a whole new way to dive. I wasn’t going to write a review but after seeing such a negative review from someone I had to because I wouldn’t want anyone to miss out on something like this if they were thinking about it. It is just like breathing on land and the range of visibility is far better than a conventional mask. As far as the ignorant statement from a negative review I read you do not have to use their 1st stage for the mask. It does state that you have to use it in their manual but I called the rep for Ocean Reef in California and they said you may use it with any 1st stage of your choice, and that they themselves use other 1st stages with this mask while diving with them. As far as the add ons are concerned they are “add ons”; you do not have to purchase any of them and the mask is ready to dive with as is. I do however recommend the surface air value as it helps you conserve air while on the surface. The octopus adapter is not necessary and it takes the place of the surface air value. If you choose that as an add on instead it allows you to breathe off of your oct if your primary fails without removing the mask and it is priced at $38 from Ocean Reef direct. I prefer the SAV and there is a skill video located on [@] instructing you on how to breathe off of a regular oct if the situation should arise. Watch the video first to make sure this FFM is right for you but it truly brings diving to a whole new level and is well worth the money and all you need to dive is this mask with any 1st stage and you are ready to go.


Awesome FFM, highly recommend

By Don I.

I have used mask type and another and found the Ocean Reef to be an excellent mask, no problems at all, Awesome Vis, No Fogging and no leaking. Have had a blast using it, now looking at buying my own FFM. I would highly recommend this mask, but as a diving Instructor would also highly recommend training for its use prior to diving. You MUST practice donning and removing the mask while underwater prior to diving and always carry a spare mask in your pocket for use with your Octo if ever you are required to bail out of the FFM (Which is very rare).

A slight variation on the above mask. Neptune Space G Colbalt is the mask I have been dreaming of. It is so soft, and it just feels right on my face. I cannot even explain how much I love this mask; it is like a cloud for your face! The strap is easy to adjust, and the fit is perfect.

I love the way it feels when I am wearing it, Ocean reef diving mask Neptune space is really comfortable and fits my head perfectly. It does not leak at all, even when carrying really strenuous activities like swimming against the current. The best part? I have used other masks that were more expensive, but they never quite got the fit right. This one fits like a glove!

  • Integrated balanced 2nd stage regulator with 3/8″ threaded 31.5″ (80cm) long low-pressure hose
  • Air Tank still required to dive
  • Bellows-style face skirt molded from silicone rubber
  • Polycarbonate streamlined visor provides 92% light transfer
  • Diver Adjustable Flow Control Knob
  • Spring Profile and Large Sealing design provides a secure fit that won’t leak

Breathe naturally underwater and experience a whole new way to dive with the Ocean Reef G-Divers Full Face Mask. This diving mask provides a range of visibility that is far better than a conventional mask with its streamlined polycarbonate visor. The material maximizes your field of vision and light transmission, giving you a stunningly clear view of your surroundings. The face skirt is molded from a premium grade silicone rubber. Spring profile and large sealing are double the size and spacing to achieve a fit that is secure yet extremely comfortable. Mask easily fastens with the 6 straps and air flow can be adjusted through the side valve. Includes integrated, balanced 2nd stage regulator 31.5″ / 80cm of low-pressure hose with 3/8″ threading. Just hook it up to your first stage and go explore – you’ll see more than ever.

Customer Feedback


It's everything a good diving mask should.


The Ocean Reef Neptune Space G Scuba Diving Mask is amazing. It is being used by me for about a month now, this mask has been so great, it allows me to take a few deep breaths through my nose while letting me breathe through my mouth without causing any fog or condensation on my glasses (which is really important). The mask fits comfortably over my face and is easy to adjust if needed!


A Perfect mask for all

Dave N

It is the perfect mask for the sport diver. Suitable to start diving or for an already passionate diver as I am, this is the perfect first step into the IDM, Full Face Masks world, without having to compromise in the quality of the product, with endless possibilities of customization, whenever desired.

A fully customizable product that can serve all your needs and grow with your preferences thanks to a full line of accessories that can add at any time with your mask.

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