Shipped with Care. No Hidden Fees. Just Clear Vision Ahead.
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Product Description
Ceramic Line Cutter: Your Dive Safety Essential
When safety is your top priority, the Ceramic Line Cutter is an indispensable tool for every snorkeling and scuba diving adventure. Compact, lightweight, and razor-sharp, this device is designed to free you from entanglements in fishing lines, nets, or underwater vegetation. It’s also perfect for removing debris or trash, helping to keep our oceans clean while you explore.
The cutter features a high-quality ceramic blade housed in a durable ABS handle, ensuring long-lasting performance and resistance to rust or corrosion—even in saltwater. The included hand case keeps the cutter safely stored and ready for action, with versatile mounting options to attach it to your BCD, belt, shoulder strap, or backplate and wing harness.
Product Features
Compact and Lightweight: At just 44g and measuring 9 x 4cm, it’s small enough to stay out of the way but ready when you need it.
Sharp Ceramic Blade: The 3.5cm blade easily cuts through ropes, fishing lines, algae, and other underwater hazards.
Durable ABS Construction: Built to withstand water exposure and harsh diving environments, ensuring reliable performance dive after dive.
Convenient Mounting Options: Attach it to your BCD, belt, or harness for easy access, keeping it securely in place.
Eco-Friendly Use: Perfect for removing debris or fishing nets to keep your dive sites clean and safe.
Every diver needs a reliable line cutter as part of their safety kit. The Ceramic Line Cutter combines precision, portability, and durability, ensuring you’re prepared for any underwater challenge. Dive with confidence knowing you’ve got the ultimate safety tool at your side.
More than JUST Free Shipping
Orders $70+ ship free. Every order is carefully packed with quality guaranteed. Fast, trackable delivery in 3–10 days.
30 Day FREE Returns
Take advantage of our 30 days from delivery FREE return policy—shop with confidence. See our full return policy for more info.
Free E-guide with every purchase
Snorkelling 101: Your Ultimate Guide to Better Aquatic Adventures
Now free with every order! Access your eGuide instantly after checkout or via email, and dive in at your own leisure.
My son has a unique prescription, so I was unsure of what i should order. I emailed oceanoptics and received a quick response which steered me in the right direction! We couldnt be happier with the customer care!
Sean R.
08/19/2026
Excellent company and customer service!
I really didn’t think I would be satisfied with this mask but after reading the reviews I figured I try it. I asked questions in my order and they were answered almost immediately. I received the mask and snorkel set very quickly. I’m thrilled I found this company and took a chance with them. You will be too.
Michele
06/15/2026
OBSESSED it’s so nice to be able to see underwater
OBSESSED it’s so nice to be able to see underwater. Thank you guys for making an excellent and affordable product! Can’t wait for future vacations
Deanna R.
05/24/2026
The fit is awesome I'm looking forward when trying to use them out later when I have an opportunity.
Christopher
04/15/2026
Great mask
Great mask. Extra material underneath nose ensures no links. Glass was clean and the prescription was accurate.
Anonymous
03/22/2026
I saw the fish!!!
I love, love, love these goggles! I can finally see all the fish when I go snorkeling. The goggles were made to my exact prescription. I could see all things underwater perfectly. The goggles didn’t leak or fog. Best snorkel gear ever!
Joan M.
03/13/2026
I can Sea!
I can Sea! I am so excited to use these! I can see through them and feel excited more than ever now to go snorkeling! Thank you for giving me my sight under water :)
Amber
02/07/2026
I cannot reccomend this enough for people who need perscription lenses. Makes snorkleing/ diving much more enjoyable and I prefer the lens quality compared to a non RX regular mask. Its very clear and fits well! No complaints or issues. If youre hesitant about what perscription to get, include your RX and someone will reach out to you with reccomendations (i went with their rec). Pretty fast shipping too.
Ashley
02/06/2026
I bought it because other friends said it was good quality, and the skirt part is also soft so it gently fits against the face and it's really nice.
The design is pretty and the price is reasonable, so there's no reason not to use it.
I will use it well and order again~^^*
Isaiah V.
12/13/2025
All around a great mask!!!
Excellent mask! I used this for a trip to Roatán. I've never worn a prescription mask before so I didn't know what to expect. On our dive down to 55ft it sealed great, no leaks!! I followed the instructions about how to fog-proof the mask and it worked, no fogging! Best of all, I could actually see!! Great customer service as well. All in all a fantastic experience.
Joseph
11/19/2025
I can't believe these weren't expensive
I can't believe I let some years go by thinking that prescription masks must be super expensive. These aren't. I haven't used them yet, but just wearing them in the house and looking at objects that I know would be a little fuzzy at a distance, were incredibly sharp. Mask made of silicon is a plus.
ROBERT L.
10/20/2025
This worked beautifully
This was my first time snorkeling. I never went before because I can't see well without my glasses. Honestly, I was nervous about it. But, I didn't need to be. Everything worked really well. I could see. I could breathe. In the end, I had a blast.
Even the boat captain commented that it was a really nice set.
Denise B.
09/30/2025
The glasses are great. Good quality, lens correction perfect.
Maurine S.
09/28/2025
Worked great!
Kathy T.
09/17/2025
Allowed my daughter to snorkel and see everything!
My daughter has bad eyesight, -7.5 prescription. She doesnt do well with contacts so wears glasses all the time. Without them she cannot see 3 feet in front of herself. These were so easy to order, arrived quickly and allowed her to really enjoy our snorkel trip to St. Croix. They worked great, no issues with using them. Thank you so much for this!!
Brenda
09/12/2025
What customers think about the store
This store specializes in prescription eyewear for water sports, offering masks, goggles, and snorkeling gear. Customers consistently praise fast shipping, accurate prescriptions, excellent quality, affordable pricing, and responsive customer service. Many hig...This store specializes in prescription eyewear for water sports, offering masks, goggles, and snorkeling gear. Customers consistently praise fast shipping, accurate prescriptions, excellent quality, affordable pricing, and responsive customer service. Many highlight life-changing experiences being able to see clearly underwater for the first time.
What is the difference between nearsighted and farsighted lenses?
Nearsighted (Myopia) lenses: Negative SPH values (example: -2.50) to help you see clearly at distance.
Farsighted (Hyperopia) lenses: Positive SPH values (example: +2.50) to help with close-up vision.
How do I find the sphere (SPH) value on my prescription?
Look for the column labelled SPH or Sphere. It can also be labelled Power or PWR. A minus sign (-) is nearsighted. A plus sign (+) is farsighted.
How should I adjust my prescription for clear vision underwater?
Underwater adjustment: For most people, choosing a lens that is 0.50 diopters weaker (towards zero) than your normal SPH gives the best comfort and clarity underwater.
Why: Water creates natural magnification, and mask lenses sit further from your eyes than glasses. Reducing by 0.50 helps keep vision feeling natural and comfortable underwater.
Examples: If your SPH is -2.25, choose -2.00. If your SPH is -2.75, choose -2.50.
Our lenses are available in 0.50 increments, so choose the closest available option.
I have astigmatism (CYL). What should I choose?
Our lenses are sphere only, meaning they correct SPH but not CYL directly. You can still see a significant improvement. Use your SPH for each eye, then adjust based on your CYL value and sign.
Important: The + or − sign on your CYL matters. Check your prescription slip for the sign next to your CYL value.
Nearsighted (Minus −) lenses
CYL 0.00 to 0.75: Go 0.50 weaker than your SPH (closer to zero). The CYL sign has little impact at this level.
CYL 1.00 to 1.75 with minus CYL (−): Stay close to your SPH. You can go up to 0.50 stronger (further from zero) or up to 0.50 weaker (closer to zero).
CYL 1.00 to 1.75 with plus CYL (+): Stay close to your SPH. You can go up to 0.50 weaker (closer to zero) or stay at SPH.
CYL 2.00 to 3.00 with minus CYL (−): Stay exactly at your SPH. Only go 0.50 stronger if you specifically want sharper detail.
CYL 2.00 to 3.00 with plus CYL (+): Stay exactly at your SPH. Do not go weaker.
CYL 3.25+ with minus CYL (−): Move slightly toward stronger correction, rounded to the nearest 0.50 step.
CYL 3.25+ with plus CYL (+): Move slightly toward weaker correction, rounded to the nearest 0.50 step.
Special case: If your SPH is −0.50 or −0.75 and CYL is 2.50 or higher, start at −1.00.
Farsighted (Plus +) lenses
Our farsighted lenses come in whole steps only: +1.00, +2.00, +3.00, +4.00, +5.00.
CYL 0.00 to 0.75: Round to the nearest whole number toward zero.
CYL 1.00 to 1.75 with minus CYL (−): Round to nearest whole number, or one step stronger for sharper detail.
CYL 1.00 to 1.75 with plus CYL (+): Round down to the nearest whole number.
CYL 2.00 to 3.00: Stay at your SPH rounded to the nearest whole number.
CYL 3.25+ with minus CYL (−): Move toward stronger correction, round to nearest whole number.
CYL 3.25+ with plus CYL (+): Move toward weaker correction, round to nearest whole number.
Special case: If your SPH is +0.50 or +0.75, start at +1.00 regardless of CYL.
If you are unsure, upload your prescription and we will check your selection for you.
I can't find my lens strength in the dropdown. What should I do?
The dropdown shows all strengths available for that specific mask. If your exact number is not listed, choose the closest available option using the guidance above.
If you want us to confirm the best match, upload your prescription on the product page or email us at info@oceansoptics.com.
Can I choose different lens strengths for each eye?
Yes. You can select different strengths for left and right eye. You can mix and match any combination available in the dropdown menu.
How do I upload my prescription during checkout?
On the product page you can optionally upload your prescription so we can check your selection before we build it. You can also leave a note in the cart, or email us at info@oceansoptics.com.
How do I stop my mask from fogging?
A simple method is the toothpaste trick. Rub a small amount of toothpaste on the inside of each lens using circular motions for a few minutes, then rinse thoroughly. Do this before your first use and repeat if needed.
Before each session, you can also use a tiny amount of baby shampoo or dish soap mixed with water. Rub a thin film on the inside of the lens, then lightly rinse so a fine layer remains.
Do you have a guide to help me use my mask properly?
What happens if I accidentally choose the wrong lens strength?
Message us as soon as possible. If the order has not entered the build or shipping stage yet, we can usually update the lens selection.
Are your lenses safe for both snorkeling and scuba diving?
Yes. Our lenses are HD tempered glass and are suitable for snorkeling and scuba diving up to 100 ft (30 m).
How long does delivery take, and can I track my order?
Most orders arrive in 5 to 10 days, but we recommend allowing up to 14 days to be safe. You will receive a tracking number by email once your order ships.
What is your return or exchange policy for prescription masks?
Your satisfaction, guaranteed.
You have 30 days from delivery to request a return, as long as the item is unworn, unused, with tags, and in original packaging. For full details, visit our Return Policy.
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