What is the difference between nearsighted and farsighted lenses?

Nearsighted lenses have a negative SPH value and correct distance vision. Farsighted lenses have a positive SPH value and correct close-up vision.

How do I find the sphere (SPH) value on my prescription?

The SPH value is usually in the first column of your prescription. A negative number indicates nearsightedness, while a positive number indicates farsightedness.

How Should I Adjust My Prescription for Clear Vision Underwater?

Select a lens strength 0.50 to 0.75 diopters weaker than your regular prescription to compensate for underwater magnification.

Can I choose a lens strength that isn’t listed in the dropdown?

If your exact strength isn’t available, pick a lens 0.50 to 0.75 diopters weaker than your prescription to maintain clear vision underwater.

Can I choose different lens strengths for each eye?

Yes, you can select different strengths for each eye if they are available in the dropdown.

How do I upload my prescription during checkout?

You don't need to upload it. Contact us via chat or email if you require specific strengths or assistance.

What happens if I accidentally choose the wrong lens strength?

Contact customer support immediately. We may be able to correct the order depending on its processing stage.

Are your lenses safe for both snorkeling and scuba diving?

Yes, all lenses are certified HD Tempered glass and safe for snorkeling and scuba diving up to 100ft.

How long does it take to receive lenses, and can I track my order?

Orders usually take 7-14 days to process. A tracking number will be provided via email upon shipment.

What is your return or exchange policy for prescription lenses?

You have 30 days from delivery to return your mask. For full details, visit our returns policy on the Oceans Optics website.

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Mask Case

Name: Mask Case
Brand: Oceans Optics
SKU: 14:193#1pcs
Price: 6.0 GBP
Availability: InStock

Mask Case

£6.00 GBP

~~£12.00 GBP~~ £6.00 GBP

SALE Sold out

Free Delivery

Quantity

Product Description

Ensure your snorkeling mask stays protected with our EVA Protective Case. Made from shock-absorbent EVA, it offers sturdy protection against impacts and scratches, keeping your mask safe during travel and storage. Featuring a handy zip closure for quick access, this durable case combines security with style, making it an essential accessory for any snorkeler.

Free Shipping

Please allow 5-15 days for us to get the order ready and delivered to you.

View full details

Look at those Specs...

Ultimate Travel Pack Ultimate Travel Pack

Case material & Aftercare

Case: Made form shock absorbant EVA, providing tensile strength and cushioning with high toughness.

Aftercare: Rinse thoroughly after contact with salt. Especially the zipper.

Product dimensions and suitability

Size: Length = 19cm, Width = 13cm, height = 7.5cm

Whats in the box?

Packing List:

1 x Mask Case
Digital E-guide. Delivered straight after checkout.

Let customers speak for us

from 858 reviews

Fantastic!

The last time I went snorkeling (more than 10 years ago) I wore contacts. At age 65, glasses only. I thought I was done snorkeling, until I found these! They worked perfectly! I could see the fish. And at around 80 bucks for the mask and a breather tube, it's a bargain. They charge like $25 to rent them at the beaches when you go on a cruise (and it is gross using something that was in someone else's mouth!) I highly recommend these if you are near-sighted and want to snorkel.

GoBucksJoe

Rx Obsidian Prescription Snorkel/Dive Mask_Medium

03/03/2025

Ecellent mask, i can finally see! Wow, im so happy i found this site!

Jewell Schinner

Rx Action Prescription Snorkel Mask w/Cam Mount_Large

02/26/2025

Great fit, great view.

Received my prescription mask. It fits great and I am looking forward to actually being able to see the world underwater for the first time.

Marian Brown

Rx Obsidian Prescription Snorkel/Dive Mask_Medium

02/25/2025

Great mask

Had no idea that I could order a prescription mask for my husband! Ended up being the best gift ever for our trip to Cozumel. Amazing mask and spot on!

Suezq

Rx Carbon: Nearsighted Mask for Scuba Diving - Large

02/18/2025

I could see!!!

I have been unable to wear contacts for the past 5+ years , so ordered this mask with the 7 (highest) lens. Took a snorkel trip in Belize. The guide pointed out sting rays buried in the white sandy bottom - sea urchins tucked in reefs - I saw all of it - better than contacts with a regular mask. Best pre vacation purchase ever!

Meg S

Rx Obsidian Prescription Snorkel/Dive Mask_Medium

02/18/2025

I can snorkel!!!

It has been more than a decade since I went snorkeling. At age 65 I no longer wear contacts lenses. Finding prescription goggles (at a very reasonable price) was a blessing! Without correction, everything would be a blur. But I was able to see the fish and the rest quite clearly!

Plus it was comfortable. If you need prescription lenses for distance, these are worth it.

Additionally, they came pretty quickly.

GoBucksJoe

Rx Obsidian Prescription Snorkel/Dive Mask_Medium

02/17/2025

Great mask and can see without glasses!!!

Great quality mask!!!

Steve Goode

Rx Carbon: Nearsighted Mask for Scuba Diving - Large

02/16/2025

Great fit, and an amazing buy!!

Even though I haven’t tried the in the water yet I am super happy with my purchase!!