Product No: 411239


The Stream snorkel mask is a single lens mask. Ergonomic and made of siliter: it adapts to any face shape. Ez Adjust system with buckles for easy adjustment.
Lightweight and super durable design: it is designed to be worn for a long time. This mask offers wide peripheral vision and allows you to see perfectly in every direction.

Product Information


The Stream snorkel mask is monolent with wide peripheral vision. A product that combines design and technology for great performance in the water. The mask is ergonomic and made of siliter: this means that it adapts to every face shape with a perfect wearability. Also, thanks to the Ez Adjust system, the buckles have an easy method of adjustment.

The main features of the Stream snorkel mask are:

Siliter mask for single lens snorkeling.
Ergonomic design
Wide down and peripheral vision.
• Ideal for long wear
• Durable technology
• Ultra lightweight design
• EZ Adjust buckles allow for quick and easy adjustment of the mask.

How to use the Stream snorkel mask:

• Lay the mask over your face, tension the headboard on the back of your head.
• Pull on the ends of the headboard so that the mask fits snugly over your face. If you have over-pulled, release the headboard using the buckles, and readjust.
• To remove the mask safely, loosen the headpiece using the buckles and return it to the front of your face.
• When entering the water from the boat, keep the mask close to the face and hold it with one hand. The dive should not be headfirst or face downwards.
• Blow through your nose if you feel the mask being pressed against your face by the pressure of the water.
• If the lenses fog up, treat the inside surface of the lenses with an anti-fogging solution and rinse them with water.

Care and maintenance of the Stream snorkel mask:
Follow the advice and instructions in the package insert.


Internal volume:


  1. Wide Field of Vision
    Wide Field of Vision

    Wide Field of Vision

  2. EZ Adjust Buckles
    EZ Adjust Buckles

    EZ Adjust Buckles



  • Masks, Snorkels and Fins User's Manual
    Instructions for the use, care and maintenance of Mares' masks, snorkels and fins.
    Languages: EN
  • Aquazone Masks Technical Specifications (2019)
    Languages: EN


Please follow the instructions contained in the manual. You must read and understand all warnings and instructions in their entirety before using our products. Scuba diving is a hazardous activity, which involves a risk of injury to any and all parts of the body. As with all scuba diving equipment, our products are designed to be used by trained, certified divers only.

Delivery & Returns


Online purchases on are only enabled for Italy. Some products from the catalogue are only available to purchase at an authorised Mares Dealer.

Products shipped in Italy are entrusted to Bartolini couriers.

Delivery times are 3-5 working days in Italy.



If you are not satisfied with your order, you can return it quickly and easily.

You can decide to return any products purchased on within 30 days of delivery. To return items, use the same box they were received in, complete the returns label found here with shipping details and attach it to the box. Remember to insert the delivery number found on page 1 of the delivery documents.


To allow you greater freedom, we have not chosen a courier service with which you need to return the package, you are free to choose your preferred service provider.

Please remember that shipping costs are your responsibility.


At the moment, we cannot offer exchanges on our products. If you would like a different size, please return the article for a refund and purchase a new size. If you still have any doubts, you can write us an email at, our Customer Service team will be happy to help.