Hollis M4 Mask
The Hollis M4 Mask is a frameless classic shape mask with a black silicone skirt which is popular with advanced and technical divers because of its superior peripheral and vertical vision.
The Low Volume Design makes this mask easy to clear and brings the lens closer to the eye which increases the field of vision. The frameless design also allows the mask to be folded flat so it can be stowed in a pocket. 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.
Black Silicon Skirt
Wide Feild of Vision