OceanReef Space Extender 100 Professional Line Integrated Diving Mask - Black

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  • OceanReef Space Extender 100 Professional Line Integrated Diving Mask - Black
  • OceanReef Space Extender 100 Professional Line Integrated Diving Mask - Black
  • OceanReef Space Extender 100 Professional Line Integrated Diving Mask - Complete Packaging

OceanReef Space Extender 100 Professional Line Integrated Diving Mask

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Quick Overview

SPACE EXTENDER 100 Diving Full Face Mask 100% O2 Compatible with Integrated 2nd Stage, Surface Air Valve & O2 Clean Viton O-rings. This is an Upgrade to Superior Comfort, Performance & Versatility.

Full Face Mask Nitrox Comp. with INT Regulator Surface Air Valve & Nitrox Kit

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OceanReef Space Extender 100 Professional Line Integrated Diving Mask

Why should scuba diving with full face masks be considered only for professional, commercial or long time experienced divers? Everyone should be able to enjoy the many benefits of diving OCEAN REEF’s Integrated Diving Masks. Why limit the revolution to scuba diving? Here introducing the entry level, professional performance, products from OCEAN REEF’s Sportline the best way to start, or evolve, your relation with the underwater realm.

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 right off the bat. 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. Specifically designed for long and/or deep dives – all those applications where high percentages of O2 are needed.

SPACE EXTENDER Diving Full Face Mask 100% O2 compatible with integrated 2nd stage, surface air valve and O2 clean viton o-rings. This is an upgrade to superior comfort, performance and versatility.

Just like any other SPACE EXTENDER IDM, the SPACE EXTENDER 100 comes with the full EXTENDER KIT of frame, earphone supports and new NACS for full customization.


Key Features:

  • Viton O-rings
  • Christolube lubricant


It comes with:

  • A padded bag to protect and carry your IDM
  • Warranty Registration – Limited Lifetime Warranty with these babies!
  • The full Extender Kit (frame + accessories – frame is already mounted).
  • Equalisation plugs set. 3 sizes.
  • Screwdriver.
  • Standard Hose.
  • Stickers to show off you’re an OCEAN REEF addicted.




  • Experience natural breathing


  • Nothing to bite on
  • Frees mouth to communicate, drink


  • No fogging thanks to the air circulation system
  • No product treatment needed


  • Automatic pressure equalization at each inspiration thanks to the integrated breathing apparatus


  • Breathing inside the mask automatically purges water through the draining/exhalation valve. When voluntarily flooding the mask, a couple purges of the second stage button completely clear the water from the mask


  • Patented design
  • 3 way directional adjustment system: up/down, wide/narrow, close/far. Made for maximum comfort and nose breathing
  • Pushing the mask towards the face when needed causes the plugs to create a nasal seal


  • Air circulation is achieved with an orinasal pocket so that CO2 build-up is not mixed with fresh air.
  • One-way circulation keeps mask clear.


  • Easy to grab, sturdy design
  • Large air vents
  • Allows IDM divers to breath ambient air when at the surface


  • Large, one way valves drain any water and air in the mask during exhalation
  • Purging the regulator will drain water even faster
  • Directional exhaust valve orients the bubbles away when needed
  • Position options are left, right, both sides and closed


  • Pneumatically balanced second stage provides consistent ease of breath at any tank pressure
  • Adjustment knob provides the diver with the requested amount of air flow under all circumstances
  • Dive/pre dive lever (Venturi) helps avoid surface free flow in harsh conditions
  • CE certification in accordance with 89/686/CEE directives under UNI EN250 standard rules for underwater activities, including low temperatures (<50°F or <10°C)


Space Extender & Space Extender 100 Features:

Entender Kit & Entender Kit 100 Features

Weekly Special No
Stocked No
Product's code OR025100-CP
Manufacturer Ocean Reef
Gender Unisex
Product Type Full Face Masks

Adaptability- Face Seal - Sizes

The patented bellows-type skirt with a “spring profile” has a large sealing surface (30-45 mm, double that of a conventional mask). The spring effect is achieved by a combination of the double “S” section and the inner support ribs, resulting in a comfortable fit and ample support. This allows the mask to “float” comfortably on the face. The face seal and strap concepts are OCEAN REEF patents.

The majority of the models may be supplied with two sizes: Small/Medium and Medium/Large. In order to determine whether a diver should wear a S/M or M/L mask, OCEAN REEF has designed a Mask Measuring Kit (code 33075).

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, use the caliper to take two simple face measurements. Using the Full Face Mask Size Recommendation Chart, it is possible to evaluate the size category into which the measurements fall.

There are three different size categories on the chart: Small/Medium, Both, and Medium/Large. If the measurements fall within the both category, then the customer should technically be able to wear either size (MEDIUM/LARGE or SMALL/MEDIUM), and in that case they 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.

Face Measurement

Face Length (Vertical) x Face Width (Horizontal)

Face Measurement