IST M55 Corona Dive Mask

While it is engineered specifically for scuba diving, its dual-lens design and comfortable seal make it perfectly capable for snorkeling as well. It offers the same clarity and fit regardless of whether you are on the surface or submerged.

A dual-lens mask like the M55 typically offers a more compact internal volume, which makes it easier to clear water from the mask. While single-lens masks provide an uninterrupted view, the M55's two-window configuration is designed to maximize visibility while maintaining a secure, low-profile fit.

The M55 Corona is a standard dual-lens mask, but it is not specifically marketed as having interchangeable prescription lens capability. If you require vision correction, you may need to look for a mask specifically designed to accept optical inserts.

The M55 features a flexible nose pocket that allows for easy equalization. This is essential for scuba diving, as it lets you pinch your nose comfortably to equalize pressure in your ears as you descend.

The mask is constructed with a high-quality silicone skirt designed to create a reliable, watertight seal against most face shapes. Because everyone's facial structure is unique, we recommend ensuring the strap is adjusted properly to maintain that seal without over-tightening.