Hollis Optical Lens M3 Replacement Mask Lens

Pick accessories — 90% off with your $50+ order

Start $501 pick $1252 picks

DiveCatalog DIN Cap for 1st Stage (Female) for Scuba Diving Tanks - Scuba Essentials
$19.95$2.00

1
DiveCatalog Hose Clamp for Scuba Diving - Scuba Essentials
$17.95$1.80

1
DiveCatalog Neoprene Mask Strap Cover
$17.00$1.70

1
DiveCatalog Silicone Mouthpiece Replacement w/ installation - Scuba Essentials
$14.95$1.50

1
DiveCatalog Rubber Tank Valve Protector for Scuba Diving Tanks - Scuba Essentials
$11.95$1.20

1

90% off applies automatically at checkout on orders of $50+ — or free for signed-in members. Not combinable with discount codes.

Payment & Security

Payment methods

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

Product Information

The Hollis Optical Lens M3 is a replacement corrective lens made exclusively for the Hollis M3 dive mask, sold individually by side (Left or Right) in diopters from -1.5 to -8.0.

Who it is for

This lens is for divers who already own a Hollis M3 mask and need vision correction underwater instead of wearing contacts or prescription glasses under a standard mask. Because each lens is diopter-specific and side-specific, it also suits divers whose prescription differs between their left and right eye, letting them mix and match strengths as needed.

Key details

Diopter range: -1.5 to -8.0, available in half-diopter increments.
Sold as a single lens per side; order Left (LT) and Right (RT) separately to build a matched pair.
Left and right lenses are not interchangeable, so each lens fits only its designated side of the M3 mask.
SKU format follows 205.50XX.XX, with the diopter value and side (LT or RT) encoded in the part number.

Compatibility and sizing

This optical lens is designed exclusively for the Hollis M3 mask and is not confirmed to fit other Hollis mask models. Confirm your prescription diopter and the correct eye side before ordering, since the lens cannot be swapped from left to right or vice versa after purchase.

DiveCatalog.com is an authorized Hollis dealer and a dive shop based in Irvine, California, serving divers since 2003. Call or chat with our team at 888-701-4017 if you have questions about diopter selection, side fitment, or Hollis M3 mask compatibility before you order.

⚠️ WARNING: This product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.

Frequently Asked Questions

Can I use the Hollis Optical Lens M3 in a different Hollis mask?

No, it is made exclusively for the Hollis M3 mask; Hollis does not list compatibility with other Hollis mask models.

Do I need to order one lens or two?

Each Optical Lens M3 is sold individually per side, so you need to order a Left (LT) lens and a Right (RT) lens separately to build a full pair. You can choose different diopter strengths for each eye if your prescription varies between sides.

What diopter strengths are available for the Hollis M3 optical lens?

The Optical Lens M3 is available in diopters ranging from -1.5 to -8.0, offered in half-diopter steps. Check your current eyeglass or contact prescription and match it to the closest available diopter when ordering.

Why does the listing mention Prop 65?

The lens carries a California Proposition 65 warning because it contains BPA (Bisphenol A), a chemical the state requires disclosure for due to potential reproductive harm. This is a standard regulatory notice and does not indicate a product defect.

86%

(1178)

(114)

(37)

(16)

(31)

Like dis

Like dis project

Excellent wetsuit but will it crush quickly like other wetsuits?

I purchased a BARE 5mm Reactive wetsuit (open box), which was like new, to replace my 1.5 yr old BARE 5mm Velocity wetsuit which had collapsed to only 2.5mm after 3 diving trips (~100 dives). The Reactive wetsuit is well constructed and very flexible. I had to increase the size of the Reactive suit, as it was smaller than the BARE Velocity suit of the same size. Tremendous customer service by Dive Catalog to exchange the wetsuit for proper size. I hope the Reactive suit does not crush so quickly like my other wetsuits (BARE, Henderson, Pinnacle). Hoping that the new technology in this suit will keep me warm below the thermocline.

Perfectly Built

Best of the many many diver hangers in my life. Easily supports my steel-plated BCD, while still donned with all of my accessories. No cracks, bends, or dents. Has even supported my BCD w/ a steel 100 tank attached (not recommended, for safety purposes, though).

Will continue to use this hanger for the long-term. No brainer.

Go-to Dive Hanger

This is a must-have for every diver. It's the quintessential hanger for all dive gear in one small package.

DiveCatalog's "Quick Dry Multi Accessory Dive Gear Hanger for Boots, Gloves, Hood" is set at a great price for a great product. Versatile enough that I've purchased extra hangers to organize my BMX racing gear.

Must-have for divers and anyone looking to organize their adventurous outdoor activities equipment.

Solid Hanger w/ Tons of Options

Does it's job and then some. The added accessory arms gives you options for a multitude of storage solutions. Solid build, solid pricing, must have for owns of dive gear.

Brand	Hollis
Product type	Replacement optical lens
Compatible mask	Hollis M3
Diopter range	-1.5 to -8.0
Side options	Left (LT) or Right (RT), sold individually
Interchangeability	Left and right lenses are not interchangeable
SKU format	205.50XX.XX
Regulatory disclosure	California Prop 65 warning for BPA content

Hollis Optical Lens M3