The Atlantis Icon M4 is a frameless design mask with a medium to wide fit.
The low volume of the M4 means the lenses are sitting closer to your face creating a wider field of vision and a smaller pocket of air to equalize.

Features include:
Medium to wide fit.
Crystal silicone double-flanged skirt.
Quick adjust ratcheting buckles.
Easy access nose pocket.
Tempered glass single lens.
Colour: Black/Black Silicone or Clear/Clear Silicone
Comes with a mask box to prevent travel damage.