The Hollis M4 Mask is a frameless classic shape mask with a black silicone skirt which is popular with advanced and technical divers. The Low Volume Design of the Hollis M4 Mask makes it easy to clear and brings the lens closer to the eye which increases the field of vision.
The M4 Comes in a Rugged Mask Box to protect your mask when not in use and micro adjustable silicone mask strap can be made to the perfect fit.
Holllis M4 Mask Features:
Black Silicon Skirt
Wide Feild of Vision
Hollis Mask M-4