Adult's Mask 100 - Blue



Made for for SCUBA divers and snorkellers.
The blue 100 adult's mask is solid and comfortable. It can be used for snorkelling and SCUBA diving. No need to choose between price, quality or safety!


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Field of vision123° horizontal field of vision, 99° vertical field of vision.
Anatomic designTwo adult mask sizes with a silicone skirt for comfort and a watertight seal.
DurabilityLens in shatterproof polycarbonate improved safety.
StabilitySilicone strap for a firm hold.
Warranty2 Years
Technical Information

Size M is for thin faces: 90 % of children over age 10, 90 % of women, 50 % of men. Size L covers wide faces: 50% of male faces and 10 % of female faces.
Flexible part of mask in contact with face.
Silicone is an extremely flexible and hypoallergenic material. A silicone skirt fits flexibly to the contours of the face, creating a watertight seal.
Polycarbonate lens
The polycarbonate glass is shatterproof. But it is prone to scratching.
Mask certified compliant with safety requirements according to European EN 250 standards. Certified by the INPP (French professional diving institute).

AdvantageGood support, silicone strap
Information / Concept / Technology
Joint/Gasket : 100.0% Silicone Elasticised band : 100.0% Silicone Lens : 100.0% Polycarbonate (PC) Frame : 100.0% Polycarbonate (PC)

Stockage tips
Store in a dry place away from light.

Maintenance tips
Rinse with fresh water after use.


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Used for 2 to 8 weeks
Great values!!
Snorkeling mask
Used for 1 week or less
SNorwell and mask
Used for 2 to 8 weeks
Very good for the price nice fit .very happy with this mask and snorkel
Handy and portable. Easy to adjust
Used for 2 to 8 weeks
Good product. Good value for money.
Its loose and water gets in
The water gets in when its use
Response of the brand

Hello Kumar,

Thank you  for rating the Adult diving and snorkeling mask. I  apologise for the bad experience you have faced with it.
Looking at the problem you have faced, it may be because the size of the mask does not fit your face, because of which, the snorkeling mask feels lose and water is seaping in. The perfect way to decide the size of your mask is to wear it without the belt, press it onto your face and create the suction effect. If the mask remains on your face for more than 5 seconds with the suction, then it is the right size for you.

As for the product, I invite you to any of our Decathlon stores across India to have it exchanged for a product that best suits your requirement. You can ask any of our sales advisors at the stores to help you choose the best mask size, so that you will have a brilliant snorkeling experience.

Do get back to me in case you have any further queries. Have a nice day!

Pearl D'Souza
E- Sports Manager
100 adult diving or snorkelling mask
Used for 3 to 6 months
great product at great affordable price
Good product spoiled
Used for More than 2 years
The product was fantastic as long as the front plate pf the mask was glass.Product now has a plastic plate which is prone to fogging and scratches
Response of the brand

Hello Arun,

Thank you for rating the Adult snorkeling and diving mask.
Our first price mask is composed of polycarbonate lens for basic snorkeling. I suggest you try our 100+ Snoreling mask. Here's the link to it:

It is composed of tempered glass which is more durable than the tradional glass and will help you enjoy your snorkeling experience.

I invite you to any of our Decathlon stores to have the product  exchanged for a product that best suits your requirement. You may ask any of our sales advisors to help you with the specifications of the mask and the benefits of it.

Do get back to me in case you have any other queries. Have a nice day!
Pearl D'Souza Logistics Supply Manager DECATHLON
Excellent mask
Used for More than 2 years
Extremely good value
Clear glass and very good seal
Very comfortable.
Used for More than 2 years
I had this mask for few years now, It's very comfortable, has great view (glass is flat so side is not disoriented), Didn't get damaged till now (I have 2 both are good).
I do wonder though since seller told me it's for scuba too, can it go under 25 meters depth.
Comfort, view and Quality.
Response of the brand
Dear Sir,
Thank you for taking time to give us your feedback concerning the mask 100. I am glad to read that you appreciate the comfort and the view of the mask.It has been tested in an external laboratory following the requirements of the europeen norm : EN250. So i guarantee you can dive with this mask below 25 meters.Have a great dive !Best regards.
Emily GladwinProduct manager
Ahmed found this answer helpful
Snorkelling Mask
Used for 2 to 8 weeks
A cheap, good value diving mask. I purchased it as I had misplaced my more expensive mask and wanted a low cost alternative. Despite being a little sceptical due to the low cost I used it for reef snorkelling and found it to work perfectly and would happily recommend it. It doesn't come with a protective bag/box which is why I didn't give it 5 stars.
Good value for money. Worked well.
Lack of protective bag/holder
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